ISG Ltd explained

ISG Ltd
Former Name:Interior Services Group
Type:Subsidiary
Industry:fit-out, construction, engineering services
Foundation:1989
Location City:London
Location Country:England
Area Served:Europe, Middle East, Asia
Key People:Zoe Price (CEO)
Revenue:£2,190 million (2022)
Num Employees:2,982 (2021)
Parent:Cathexis
Homepage:isgltd.com

ISG Ltd (formerly Interior Services Group) is a privately owned, London-based construction company that employed around 3,000 people, mainly in the UK, mainland Europe and the Middle East. In terms of turnover, at one point it was the sixth biggest contractor in the UK.

It was founded in 1989 as Stanhope Interiors; it was renamed Interior plc following a management buyout during 1995. Two years later, the business, which was then trading as Interior Services Group, was floated on the Alternative Investment Market of the London Stock Exchange. It expanded rapidly during the late 1990s and early 2000s, branching into construction management and facilities management. During the mid 2000s, the firm opted to reduce its presence in some markets, such as France and Germany, while embarking on an spree of acquisitions, including Propencity, Commtech Asia, and Pearce Group.

Following the start of the Great Recession in the late 2000s, both orders and profits at the company dipped sharply. In response, ISG sought out new business on the still-growing international market. During March 2016, ISG was taken private by the US-based firm Cathexis (the investment vehicle of Texan billionaire William Harrison). During the early 2020s, the company's fiscal condition was impacted by the COVID-19 pandemic. In September 2024, following months of concerns about its finances and a stalled sale of the group, eight ISG businesses entered voluntary administration; it was called the biggest collapse in Britain's construction sector since Carillion in 2018. At the time of its collapse, ISG was working on over 600 construction, fit out and retail sites, including 69 UK public sector projects worth at least £1.84bn. It owed over £1.1bn. Around 2,200 ISG UK employees were immediately made redundant.

History

ISG originated as Stanhope Interiors, which was founded in 1989 by David King.[1] [2] During 1995, King led a management buyout of the firm from the indebted Stanhope in 1995, when it was renamed Interior plc.[3] [4]

During early 1998, Interior PLC opted to move into construction management via the launch of a new subsidiary.[5] Around this time, the firm experienced a period of rapid growth.[6] [7]

In 1997, the business, which was then trading as Interior Services Group, was floated on the Alternative Investment Market of the London Stock Exchange.[8] By this time, much of the firm's work involved kitting out offices across the City of London.[9] During 2003, it opted to reduce its presence in the poorly performing economies of France and Germany.[10] One year later, David King became Interior Services Group's chief executive while Roy Dantzic was appointed its chairman; other changes around this time included the sale of the firm's facilities management division to Erinaceous for £10 million.[11] [12]

During 2005, Interior Services Group paid £12.5 million in exchange for the social housing specialist Propencity.[13] One year later, it also bought the facilities management firm ISG Asia for £4.6 million.[14] In 2007, the firm acquired the regional contractor Pearce Group in a deal that was potentially valued at around £20 million; this purchase expanded Interior Services Group's regional coverage, which had traditionally centred around the southern, eastern and northern regions into the west of England and South Wales, as well as expanding its presence in the affordable housing and student accommodation sectors.[15] That same year, it also purchased the fit-out specialist Cathedral Contracts in exchange for £11.8 million,[16] and technical consultancy firm Commtech Asia for £1.2 million.[17]

During the late 2000s, the company's profits and order book both dipped sharply; this was mostly attributed to the wider economic downturn known as the Great Recession.[18] [19] In September 2011, Interior Services Group reported a record high in terms of revenue while profits for its struggling south west construction division had roughly halved.[20] During the early 2010s, the firm's then-chief executive David Lawther responded to the decline by reorienting the company towards the still-growing international market.[21] [22] In April 2013, the firm officially changed its name to ISG plc.[23] [24] That same year, its construction arm underwent restructuring, which involved the streamlining of its eastern construction division while retail activity was placed under a single management team.[25]

In March 2016, ISG was taken private by the US-based firm Cathexis (the investment vehicle of Texan billionaire William Harrison), previously a substantial shareholder, in a £85m takeover.[26] [27] [28] At that time, the renumeration of ISG's highest paid director, David Cossell, tripled to £3m.[29]

In May 2021, ISG reported its results for 2020, affected by the COVID-19 pandemic. Revenue was down 23% to £2.0bn (2019: £2.6bn); underlying EBITDA for the year was £37.6m (2019: £63.3m).[30] Fit-out was ISG's biggest source of revenue (£1,042.3m in 2020), followed by construction (£690.8m) and engineering services (£293.3m).[31]

In the year to December 2021, ISG reported revenues of £2.263bn, still not back to its pre-pandemic peak, while pre-tax profits increased to £18.9m, from £8.9m a year earlier;[32] fit-out remained ISG's largest service line, the company had 3,001 employees and derived £1.8bn of its revenues from the UK.[33] In early 2022, ISG acquired a majority shareholding in ESS Modular, selling it later that year to Cathexis.[34] In 2022, ISG revenues slipped to £2.19bn, while pre-tax profit was down 38% to £11.5m.[35] ISG's order book was adversely affected by the August 2022 suspension of the Britishvolt gigafactory in Blyth, Northumberland, and delays to a film studio project in Hertfordshire.[36] [37] [38] In November 2023, ISG CEO Matt Blowers and other senior staff held urgent meetings with stakeholders to reassure them about the financial status of the group.[39] [40]

Appointed in 2022, Blowers left ISG as the business underwent a 'fundamental reset' in February 2024,[41] being replaced as CEO by Zoe Price.[35] There were also changes affecting the company secretary, vice-chair and chief financial officer roles;[42] in the last five years, ISG's highest-paid executive had been paid over £18m.[29]

In October 2023, a subcontractor's winding-up petition stoked staff and supplier concern about ISG's financial stability,[43] and the company began to look for a buyer or a cash injection from Cathexis. In July 2024, ISG finances incurred a £14m hit after a key supplier went into liquidation,[44] but, despite interest from 11 private equity and trade buyers, the sale process halted after ISG received an offer for the group; ISG staff and suppliers were told the company would be sold by Cathexis in the near future, and a significant investment would recapitalise the business and support a return to normal trading.[45] The prospective buyer was reported to be a UK-registered holding company called Antipodean Holdings with two equal shareholders: South African Andre Redinger and Australian James Overton.[46]

Administration

No further progress on the sale was announced. Administrator Ernst & Young (EY) later said that on 2 September 2024, Antipodean had dropped its offer to £1 while remaining committed to funding working capital needs.[47] However, Antipodean provided no evidence it had the necessary funds. ISG's board then reopened talks with a prospective buyer of ISG Fit Out, but this buyer later dropped out, amid concerns about the group's VAT debts and novation of contracts.[47]

Late on Thursday 19 September 2024, six ISG Ltd subsidiaries – ISG Construction, ISG Engineering Services, ISG Retail, ISG Jackson, ISG UK Retail and ISG Central Services – were reported to have applied to go into administration.[48] [49] [50] ISG Fit Out, which accounted for around £500m of ISG revenue and was profitable, was not included in the initial application,[51] but further applications followed on 20 September 2024, including ISG Fit Out and ISG Interior Services Group[52] (on 24 September, Cathexis-owned ESS Modular and subsidiary Spatial Initiative also went into administration, with the loss of 100 jobs,[53] and owing £7m,[54] though its insolvency was unrelated to ISG's collapse).[55] ISG's failure was described as UK construction's biggest collapse since Carillion in 2018.[56]

According to Construction News, some site workers were told that the firm – ranked by turnover as the sixth biggest contractor in the UK[57] – had gone under, amid rumours that it had been struggling to pay subcontractors. One supplier had filed a winding-up petition against ISG Engineering Services; other suppliers facing huge debts criticised ISG for "stringing them along" for months.[58]

In a late night email to staff on 19 September, CEO Zoe Price apologised for the news leaking out ahead of a planned announcement on Monday 23 September 2024. She explained ISG's problems stemmed from legacy issues relating to large loss-making contracts secured between 2018 and 2020, which, as a result of the COVID-19 pandemic, had a significant effect on liquidity. In the circumstances, "it was not possible to conclude a sale, as the purchaser could not satisfy the funding needed to recapitalise the business"; Cathexis had also looked unsuccessfully at refinancing the company, and selling individual businesses had not been practicable in the timescale, leaving "no option but to file for administration".[59] Andre Redinger of Antipodean Holdings disputed Price's position on the sale. A "fair deal" had been on the table, he said; Antipodean had a robust turnaround plan which it believed could save jobs and return ISG to growth and profitability, but ISG suddenly stopped communicating on 12 September.[60] [61] Antipodean said it had also identified a senior industry figure to be ISG's new chairman.[62]

EY's appointment as administrators was confirmed on 20 September 2024. Most of the 2,380 people employed by ISG in the UK were made redundant immediately, with 200 initially retained to assist the administrators,[63] [64] by December 2024, this had reduced to 22. Regarding the failed sale to Antipodean Holdings, a joint EY/ISG statement said: "the potential purchaser could not, despite repeated requests of them to do so, adequately demonstrate that they had the funding needed to recapitalise the business and keep it solvent." Redinger defended Antipodean's approach saying ISG's liabilities were "three or four times" his first offer, hence the lower bid;[65] the initial bid was based on an assumed deficit of £200m, but the figure jumped to over £500m, with rival firms suggesting the total deficit could be over £800m.[66] Later, in December 2024, EY reported ISG had total debts of £1.1bn (including inter-company debt, cash owed to trade creditors, and a £100m tax debt); its overdue accounts for 2023 would have reported £148m in contract write-downs and a £133m pre-tax loss, but the company had only £35m in cash and assets.[67]

Because of ISG's extensive involvement in ongoing public sector projects, UK government officials were reported to be monitoring the situation and appointing advisors to implement "detailed contingency plans";[68] [69] on 24 September 2024 the Insolvency Service set up information pages for employees and creditors.[70] ISG was working on 69 live public sector projects worth at least £1.84bn, including schools, police stations and prisons; it had 22 ongoing Ministry of Justice projects (including a £300m extension of HM Prison Spring Hill in Buckinghamshire, work at neighbouring HM Prison Grendon, and upgrades for HM Prison Guys Marsh in Dorset and HM Prison Liverpool)[71] plus work for the Department for Work and Pensions, a £518m Ministry of Defence contract,[72] and £190m of contracts for the Department for Education.[73]

At the time of the company's collapse, ISG was engaged on 100 construction sites and 500 fit out and retail sites. Ongoing ISG schemes included the £170m fit-out of Google's London headquarters at King's Cross (due for completion in late 2025),[74] conversion of Regents Quarter (also in King's Cross, London) into a life sciences campus,[75] a £44m conversion of a former IKEA store in Coventry into an arts and culture centre,[76] various school projects, including the £108m Fairwater Campus project in Cardiff,[77] Hempland primary school in York[78] and two schools in Bishop's Stortford, Essex,[79] a sports centre in Clayton-le-Moors, Lancashire,[80] three data centres (total value £500m) in southern England, and a £200m biotechnology centre in Billingham, Cleveland.[73] ISG clients were told to move quickly to find replacement contractors, or risk their projects being delayed for months,[81] though some firms were cautious about taking on ISG contracts ("You don't know what liabilities you're going to find," one firm said).[82]

On 8 October 2024, administrator EY told subcontractors and suppliers there were insufficient funds available to pay ISG creditors.[83] On 21 October, EY filed a report showing ISG suppliers to seven ISG businesses (excluding ISG Fit Out) had made over £180m in claims for unpaid bills - a figure which was likely to rise.[84] Former ISG employees were owed over £72.3m while HMRC was owed £54.4m by seven of the eight ISG businesses.[85] One electrical contractor was owed over £20m.[86] That electrical contractor, Phoenix ME, told its suppliers that they would not be paid because Phoenix had not been paid by ISG.[87] In December 2024, the eight collapsed ISG firms were reported to owe £308m; ISG Construction, ISG Retail, ISG Engineering and ISG Fit Out accounted for the bulk of trade creditor losses, with ISG Fit Out owing £111.5m, and HMRC owed a total of £89.4m.

On 25 October 2024, Seventynine Lighting, a Gloucestershire-based ISG lighting subcontractor, went into administration, with 30 staff being made redundant, after ISG's collapse left an "insurmountable" bad debt of around £2m.[88] In November 2024, glazing specialist Vitrine Systems went into administration due to a debt of £187,000 owed by ISG, with 23 people made redundant.[89]

In November 2024, Morris & Spottiswood Group acquired the former ISG Cathedral business, part of ISG Fit Out, saving 111 jobs.[90]

Industry reaction

As news of ISG's collapse broke, the Construction Leadership Council called a meeting of key construction trade bodies, education and skills providers and the Department for Business and Trade to discuss the industry's response;[72] it urged contractors to pay subcontractors promptly with ISG's collapse likely to wreak havoc down supply chains[91] (ISG was estimated to owe its supply chain over £700m).[92] Contractor Balfour Beatty contacted its suppliers to ascertain the impact of ISG's failure, potentially so it could speed up payments.[93]

A Build UK and CITB working group was established to support ISG apprentices and graduates;[72] Build UK CEO Suzannah Nichol said ISG's collapse was "devastating" for the sector and could lead to other firms going under.[94] David Frise, CEO of the Building Engineering Services Association, said "the lessons of Carillion have not been learned", adding "ISG needs to be construction's last major financial collapse that threatens entire supply chains, and the government must help us put a more robust and fit-for-purpose industry in place."[95]

In October 2024, former ISG staff called for an investigation of the company's owners and directors saying problems were emerging nearly two years previously.[96]

Operations

ISG employed around 3,000 people, mainly in Europe and the Middle East; it has Europe offices in the UK, Germany, Iberia (Spain and Portugal), Luxembourg and Switzerland, and two offices in the UAE.[97]

Notable projects

External links

Notes and References

  1. News: Directors' Deals: King sized sale as ISG founder dumps a third of his stake . 17 May 2021 . . 30 October 2005.
  2. Web site: What goes on inside the head of Interior? . constructionnews.co.uk . 15 July 1999 .
  3. News: What goes on inside the head of Interior? . 15 July 1999 . . 21 February 2023 . The fit-out arm of developer Stanhope has gone from strength to strength under his leadership, expanding after a management buyout in 1995..
  4. Web site: Stanhope is set for rebirth . constructionnews.co.uk . 12 January 1995 . Bill . Fishlock.
  5. Web site: Fit-out contractor mounts assault on construction management market with launch of new company Interior’s outside move . constructionnews.co.uk . 8 January 1998 . Aaron . Morby.
  6. Web site: Interior in demand . constructionnews.co.uk . 9 March 2000 .
  7. Web site: Bullish ISG gears up for future expansion . constructionnews.co.uk . 21 September 2000 . Sean . Cronin.
  8. Web site: Float nets Interior fit-out chiefs £3.3m . constructionnews.co.uk . 2 July 1998 .
  9. Web site: Archive: INTERIOR SERVICES (ISG) . investorschronicle.co.uk . 23 January 2003.
  10. Web site: ISG cuts off European arms . building.co.uk . 19 September 2003 .
  11. Web site: Shake-up at Interior Services gives King more power . building.co.uk . Joey . Gardiner . Mark . Leftly . 11 June 2004.
  12. Web site: ISG lops off facilities arm in bid for faster growth . building.co.uk . Joey . Gardiner . Mark . Leftly . 7 May 2004 .
  13. Web site: Totty looks to social housing after buyout . constructionnews.co.uk . 6 October 2005.
  14. Web site: Interior Services Group buys ISG Asia for £4.6m . building.co.uk . 11 July 2006.
  15. Web site: ISG snaps up Pearce Group . building.co.uk . Sarah . Richardson . 13 November 2007.
  16. Web site: ISG buys Cathedral . building.co.uk . 20 April 2007.
  17. Web site: ISG buys Commtech Asia for £1.2m . building.co.uk . Sarah . Richardson . 30 May 2007.
  18. Web site: ISG profit falls 7% but retail turnover increases by half . building.co.uk . 11 September 2009.
  19. Web site: ISG orders drop £55m . constructionnews.co.uk . 3 December 2010 . Chloe . Stothart.
  20. Web site: ISG reports ‘best ever’ revenue as construction profits halve . constructionnews.co.uk . 6 September 2011 . Luke . Cros.
  21. Web site: ISG chief looks overseas as firm takes £3m profit hit . constructionnews.co.uk . 16 January 2012 . Luke . Cross.
  22. Web site: ISG chief predicts another year of 0.2% construction margin . constructionnews.co.uk . 5 March 2013 . Luke . Cross .
  23. News: It is now officially ISG . 17 May 2021 . The Construction Index . 5 April 2013.
  24. Web site: ISG completes rebrand . building.co.uk . Joey . Gardiner . 4 April 2013.
  25. Web site: ISG construction arm edges back into profit . constructionenquirer.com . 5 March 2013 . Aaron . Morby.
  26. Web site: AIM - Cancellation - ISG Plc . Proactive Investors . 17 May 2021.
  27. Web site: Takeover of AIM listed ISG Plc by Cathexis . . 17 May 2021.
  28. News: ISG sets delisting date . 17 May 2021 . The Construction Index . 26 February 2016.
  29. News: Taylor . Guy . ISG collapse shows cracks in UK construction industry . 24 September 2024 . City AM . 24 September 2024.
  30. News: ISG weathers challenging year . 17 May 2021 . The Construction Index . 17 May 2021.
  31. News: ISG profits tumble 80% . 12 July 2021 . The Construction Index . 12 July 2021.
  32. News: Haynes . Luke . ISG revenue grows by £300m after pandemic shock . 21 February 2023 . Construction News . 10 June 2022.
  33. Web site: ISG Annual Report 2021 . ISG . 21 February 2023.
  34. News: Prior . Grant . ESS Modular staff start looking for new jobs . 24 September 2024 . Construction Enquirer . 24 September 2024.
  35. News: Rogers . Dave . ISG chief executive goes . 9 February 2024 . . 9 February 2024.
  36. News: Morby . Aaron . Hollywood film studio pauses £600m Hertfordshire job . 19 September 2024 . Construction Enquirer . 5 July 2023.
  37. News: Weinfass . Iain . Uncertainty surrounds ISG’s £700m film studio . 19 September 2024 . Construction News . 8 September 2023.
  38. News: Curtin . Andrew . The rise and decline of ISG . 19 September 2024 . Construction Wave . 8 August 2024.
  39. News: Rogers . Dave . ISG tackles ‘inaccurate and false claims’ which prompted bosses into round of meetings with concerned firms . 19 September 2024 . Building . 13 November 2023.
  40. News: Ing . Will . ISG denies ‘wholly inaccurate’ rumours about finances . 19 September 2024 . Construction News . 14 November 2023.
  41. News: Banks . Charlotte . ISG chief steps down as ‘fundamental reset’ beckons . 19 September 2024 . Construction News . 9 February 2024.
  42. News: Rogers . Dave . ISG brings in replacement for Paul Cossell as company secretary leaves . 1 March 2024 . Building . 1 March 2024.
  43. News: Rogers . Dave . 5 July 2024 . ISG set to be sold ‘in coming days’ . 5 July 2024 . Building.
  44. News: Weinfass . Iain . Envelope specialist liquidation set to hit ISG for £14m . 19 September 2024 . Construction News . 3 July 2024.
  45. News: Morby . Aaron . ISG sale set to be rubber-stamped . 8 July 2024 . Construction Enquirer . 5 July 2024.
  46. News: Prior . Grant . ISG sale imminent as buyers set-up UK holding company . 23 July 2024 . Construction Enquirer . 23 July 2024.
  47. News: Rogers . Dave . Downfall of ISG: how and why it collapsed . 4 December 2024 . Building . 4 December 2024.
  48. News: Banks . Charlotte . 19 September 2024 . ISG UK subsidiaries apply for administration . 19 September 2024 . Construction News.
  49. News: Morby . Aaron . ISG files notice of administration . 19 September 2024 . Construction Enquirer . 19 September 2024.
  50. News: ISG heads for administration . 20 September 2024 . The Construction Index . 20 September 2024.
  51. News: FIS responds to concerns related to ISG Group . 20 September 2024 . Federation of Interior Specialists . 19 September 2024.
  52. News: Prior . Grant . ISG Fit Out arm follows others with administration notice . 20 September 2024 . Construction Enquirer . 20 September 2024.
  53. News: ESS follows ISG into administration . 24 September 2024 . The Construction Index . 24 September 2024.
  54. News: Prior . Grant . ESS Modular went down owing suppliers £7m . 20 November 2024 . Construction Enquirer . 20 November 2024.
  55. News: Prior . Grant . 100 jobs lost as ESS Modular goes into administration . 25 September 2024 . Construction Enquirer . 24 September 2024.
  56. News: Kleinman . Mark . Whitehall on alert as construction group ISG heads for collapse . 20 September 2024 . Sky News. 20 September 2024.
  57. News: Barnard . Lucy . ISG UK subsidiaries file for administration . 20 September 2024 . Construction Briefing . 20 September 2024.
  58. News: Prior . Grant . “Strung along” subcontractors fury over fall of ISG . 20 September 2024 . Construction Enquirer . 20 September 2024.
  59. News: Prior . Grant . ISG boss apologises to staff in late night email . 20 September 2024 . Construction Enquirer . 20 September 2024.
  60. News: Morby . Aaron . ISG buyer claims contractor walked away from deal . 2024-09-20 . Construction Enquirer . 20 September 2024.
  61. News: Marrs . Colin . War of words over collapsed ISG sale . 20 September 2024 . Construction News . 20 September 2024.
  62. News: Marrs . Colin . Senior industry figure ‘had agreed’ to chair ISG . 23 September 2024 . Construction News . 23 September 2024.
  63. News: Simpson . Jack . More than 2,000 jobs axed as UK prison builder ISG collapses . 20 September 2024 . The Guardian. 20 September 2024.
  64. News: UK construction group appoints administrators . 20 September 2024 . BE News . 20 September 2024.
  65. News: Rogers . Dave . Amount of money needed to fix ISG’s finances ‘way bigger’ than first thought, entrepreneur who tried to buy firm says . 25 September 2024 . Building . 25 September 2024.
  66. News: Rogers . Dave . Deficit at ISG originally thought to be ‘at least £200m’ but due diligence discovered it was ‘way more’, buyer claims . 2 October 2024 . Building . 30 September 2024.
  67. News: Morby . Aaron . ISG administrator finds just £35m to pay down £1.1bn debt . 4 December 2024 . Construction Enquirer . 2 December 2024.
  68. Web site: Banks . Charlotte . 20 September 2024 . Exclusive: ISG collapse risks £1.84bn of government contracts . 20 September 2024 . Construction News . en.
  69. News: Gayne . Daniel . 20 September 2024 . Government implementing ‘detailed contingency plans’ as ISG heads into administration . 20 September 2024 . Building.
  70. News: ISG group of companies in administration: information for employees and creditors . 24 September 2024 . Gov.uk . 24 September 2024.
  71. News: Prior . Grant . 20 September 2024 . Prison building plans facing delays over ISG collapse . 20 September 2024 . Construction Enquirer.
  72. News: More than 2,000 jobs lost as ISG collapses . 23 September 2024 . The Construction Index . 22 September 2024.
  73. News: Hakimian . Rob . Extent of upheaval caused by ISG failure becoming clear . 25 September 2024 . New Civil Engineer . 25 September 2024.
  74. News: Rogers . Dave . 4 September 2023 . ISG lands prized fit-out job with £150m Google King’s Cross win . 20 September 2024 . Building.
  75. News: Morby . Aaron . 12 December 2023 . ISG wins £70m London Regents Quarter offices to labs job . 20 September 2024 . Construction Enquirer.
  76. News: Waite . Richard . 20 September 2024 . Top contractor heads for collapse leaving doubts over major projects . 20 September 2024 . Architects' Journal.
  77. News: Cardiff novates ISG contracts to keep Fairwater on track . 21 October 2024 . The Construction Index . 21 October 2024.
  78. News: Kavanagh . Alice . Hempland Primary work stops as ISG files for administration . 22 September 2024 . The Press . 20 September 2024.
  79. News: Corr . Sinead . 20 September 2024 . Failure of construction giant ISG hits work at Bishop’s Stortford High School and Avanti Grange . 20 September 2024 . Bishop's Stortford Independent.
  80. News: Stott . Jack . Hyndburn's Wilson Sport Village at threat after ISG collapse . 24 September 2024 . Lancashire Telegraph . 24 September 2024.
  81. News: Rogers . Dave . 20 September 2024 . Clients told to move quickly to find replacements for ISG, or risk sites being stalled for months . 20 September 2024 . Building.
  82. News: Rogers . Dave . Rival fit-out firm rules out taking on jobs left stranded by ISG collapse . 24 September 2024 . Building . 24 September 2024.
  83. News: Morby . Aaron . ISG administrator tells subbies no funds to pay debts . 9 October 2024 . Construction Enquirer . 8 October 2024.
  84. News: Prior . Grant . ISG suppliers facing initial £180m hit . 22 October 2024 . Construction Enquirer . 21 October 2024.
  85. News: Weinfass . Iain . ISG: Former employees owed more than £70m . 23 October 2024 . Construction News . 21 October 2024.
  86. News: Prior . Grant . ISG Fit Out arm went down owing subbies £111m . 28 October 2024 . Construction Enquirer . 28 October 2024.
  87. News: Prior . Grant . Phoenix subbies get pay less notices after ISG failure . 29 October 2024 . Construction Enquirer . 29 October 2024.
  88. News: Banks . Charlotte . ISG subcontractor files for administration . 25 October 2024 . Construction News . 25 October 2024.
  89. News: Prior . Grant . ISG collapse brings down glazing contractor . 11 November 2024 . Construction Enquirer . 8 November 2024.
  90. News: Prior . Grant . Morris & Spottiswood acquires part of ISG fit-out division . 15 November 2024 . Construction Enquirer . 14 November 2024.
  91. News: Ing . Will . CLC urges prompt payment after ISG collapse . 23 September 2024 . Construction News . 20 September 2024.
  92. News: Prior . Grant . ISG supply chain facing £700m+ hit . 23 September 2024 . Construction Enquirer . 23 September 2024.
  93. News: Morby . Aaron . Balfour Beatty acts to head-off ISG contagion in supply chain . 25 September 2024 . Construction Enquirer . 25 September 2024.
  94. News: Edser . Nick . ISG collapse 'devastating' for construction industry . 23 September 2024 . BBC News . 23 September 2024.
  95. News: Lago . Cristina . ‘Suppliers will feel hugely betrayed’: trade body warns over ISG fallout . 24 September 2024 . Construction Management . 24 September 2024.
  96. News: Morby . Aaron . Angry staff call for investigation into collapse of ISG . 2 October 2024 . Construction Enquirer . 1 October 2024.
  97. Web site: Our office locations . ISG Ltd . 20 September 2024.
  98. Web site: Royal Festival Hall . European Union Prize for Contemporary Architecture . 25 July 2023.
  99. Web site: News | Interactive Investor . Iii.co.uk . 9 September 2008 . 2 February 2013.
  100. Web site: ISG completes Zayed Sports City Stadium . Middle East Construction News . 25 July 2023.
  101. Web site: ISG installs timber cycling track at Olympic Velodrome . The Construction Index . 20 September 2010.
  102. Web site: Eyes of the world on London and Olympic infrastructure . constructionnews.co.uk . 26 July 2012 . Tom . Fitzpatrick .
  103. News: £3m Grimsby wind farm base contract handed out . 27 March 2013 . . 31 January 2014 . 2 February 2014 . https://web.archive.org/web/20140202111142/http://www.grimsbytelegraph.co.uk/3m-Grimsby-wind-farm-base-contract-handed/story-18531845-detail/story.html . dead.
  104. Web site: Bush House to get £52m revamp . standard.co.uk . 29 May 2013.
  105. Web site: ISG Construction Ltd v Seevic College . fenwickelliott.com . 3 December 2014 . 5 August 2022.
  106. News: ISG to build Royal Mint visitor centre . 14 October 2015 . Construction News . 25 July 2023.
  107. Web site: ISG takes Wigan Town Hall back to the future . 11 July 2013 . The Construction Index . 6 August 2020.
  108. News: ISG named as main contractor for BBC Wales new headquarters at Central Square scheme in the centre of Cardiff . . 18 November 2015 . 25 September 2017.
  109. News: Weinfass . Ian . Client to reimburse ISG as cost on Waterloo job rises . 17 May 2021 . Construction News . 24 September 2020.
  110. Web site: Redevelopment at Lord's enhances world-class experience at the home of cricket . Lord's . 18 May 2021.
  111. News: Gregory. Rhys. ISG secures £89 million Cardiff transport interchange project . 3 December 2019 . Wales247 . 20 November 2020 .
  112. News: Inside Cardiff's new bus station as it opens after seven-year delay . 27 June 2024 . ITV News . 29 June 2024.
  113. News: ISG wins £281m UCL neurology centre . 21 February 2023 . The Construction Index . 3 April 2019.
  114. News: Mace appointed to complete UCL's world-class neuroscience centre . 15 November 2024 . UCL . 8 November 2024.
  115. News: Haill . Oliver . Construction begins on UK's first battery gigafactory . 31 August 2022 . Proactive Investor . 6 September 2021.
  116. News: Lowe . Tom . ISG pauses work on £2.6bn car battery 'gigafactory' amid funding delays . 30 August 2022 . Building . 16 August 2022.
  117. News: ISG starts £33m Moseley Road Baths restoration . 20 September 2024 . The Construction Index . 23 August 2024.