Elections to Welwyn Hatfield Borough Council took place on 3 May 2018. This was on the same day as other local elections across the United Kingdom.[1] The Conservatives saw a reduction a large reduction in their number of seats, only just hanging on to majority of the council.[2]
| Election Name: | 2018 Welwyn Hatfield Borough Council election |
| Country: | United Kingdom |
| Type: | parliamentary |
| Previous Election: | 2016 Welwyn Hatfield Borough Council election |
| Previous Year: | 2016 |
| Next Election: | 2019 Welwyn Hatfield Borough Council election |
| Next Year: | 2019 |
| Seats For Election: | 19 out of 48 seats to Welwyn Hatfield Borough Council |
| Majority Seats: | 25 |
| Turnout: | TBD |
| Party1: | Conservative Party (UK) |
| Last Election1: | 28 |
| Seats Before1: | 27 |
| Seats1: | 6 |
| Seats After1: | 25 |
| Seat Change1: | 2 |
| Popular Vote1: | 11.553 |
| Percentage1: | 41.3 |
| Swing1: | 4.0 |
| Party2: | Labour Party (UK) |
| Last Election2: | 15 |
| Seats Before2: | 16 |
| Seats2: | 5 |
| Seats After2: | 15 |
| Seat Change2: | 1 |
| Popular Vote2: | 8,770 |
| Percentage2: | 28.9 |
| Swing2: | 0.2 |
| Party3: | Liberal Democrats (UK) |
| Last Election3: | 5 |
| Seats Before3: | 5 |
| Seats3: | 5 |
| Seats After3: | 8 |
| Seat Change3: | 3 |
| Popular Vote3: | 6,835 |
| Percentage3: | 24.4 |
| Swing3: | 7.5 |
| Map Size: | 375px |
Prior to the election the composition of the council was:
| 27 | 16 | 5 | |
| Conservative | Labour | Liberal Democrats |
After the election, the composition of the council was:
| 25 | 15 | 8 | |
| Conservative | Labour | Liberal Democrats |
A by-election was held on 29 November following the death of Mandy Perkins, the leader of the Council.