An election to the 56th Parliament of the United Kingdom for the constituency area of Westminster North, held as part of the general election on 7 May 2015.
Labour hold by Karen Buck with a majority of 1,977 - 5.0% - on a turnout of 63.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| BUCK, Karen | Lab | 18,504 | 46.8% | 2.9% |
| HALL, Lindsey | Con | 16,527 | 41.8% | 3.3% |
| SUSSMAN, Nigel | UKIP | 1,489 | 3.8% | 3.0% |
| ALLAN, Kirsty | LD | 1,457 | 3.7% | -10.2% |
| NADEL, Jennifer | Green | 1,322 | 3.3% | 2.1% |
| FAJARDO, Gabriela | CHP | 152 | 0.4% | - |
| WARD, Nicholas | Ind | 63 | 0.2% | - |
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
An electorate of 62,346, having a valid vote count of 39,514 and an invalid vote count of 186.
Result declared at 03:04 on 8 May 2015.