| IBM North Harbour | |
| Map Type: | United Kingdom Hampshire |
| Altitude: | 100NaN0 |
| Building Type: | Computer company headquarters |
| Architectural Style: | Concrete |
| Cost: | £17.2m |
| Location: | PO6 3AU |
| Client: | IBM |
| Current Tenants: | IBM |
| Coordinates: | 50.843°N -1.085°W |
| Completion Date: | 1976 |
| Inauguration Date: | 3 December 1976 |
| Other Dimensions: | 125 acres |
| Floor Count: | 4 |
| Floor Area: | 360,000 sq ft |
| Main Contractor: | Taylor Woodrow Construction |
| Architect: | Arup Associates |
| Structural Engineer: | Arup Associates |
IBM North Harbour is the headquarters of IBM in the UK, now part of a larger business park.
IBM sold the main building in 2005. In November 2015 IBM sold two more buildings, but maintains their headquarters here.
The site was chosen in 1969, and drained during 1971 under direction of Grontmij N.V. of the Netherlands. In 1972 construction of the lake took place, directly bounded to the south by the construction of the M27 embankment. The foundations were built in 1973, with 30 m-deep piles. The building was formed with pre-cast concrete sections, built on the piles.
Structural engineering and architecture was by Arup Associates. It was built by Taylor Woodrow Construction.[1] It cost £17.2m.
Prince Philip, Duke of Edinburgh opened the site on Friday 3 December 1976.[2] The Prince had flown by aircraft, being met by William Harris, 6th Earl of Malmesbury, the Lord Lieutenant of Hampshire.
IBM also had ten acres at Interchange Park, a nearby manufacturing plant, which opened in 1967.[3]
The site is accessed via the A27, at the terminus of M27. Cosham railway station is within walking distance, to the east. It is next to junction 12 of the M27.
A Porsche retail centre opened nearby in 2012, on the site. In 2012 three acres near Porsche were sold for a 124-bed hotel.
In early the 1990s, IBM employed 14,000 people in the UK
See also: List of IBM CEOs. Chief executives of IBM UK are