An election to the 56th Parliament of the United Kingdom for the constituency area of Leyton and Wanstead, held as part of the general election on 7 May 2015.
Labour hold by John Cryer with a majority of 14,917 - 36.6% - on a turnout of 63.0%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CRYER, John | Lab | 23,856 | 58.6% | 15.0% |
| SCOTT, Matthew | Con | 8,939 | 22.0% | -0.3% |
| GUNSTOCK, Ashley | Green | 2,974 | 7.3% | 5.9% |
| BEATTIE, Rosamund | UKIP | 2,341 | 5.8% | 3.1% |
| QUILLIAM, Carl | LD | 2,304 | 5.7% | -22.0% |
| AZIZ, Mahtab | Ind | 289 | 0.7% | - |
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 64,580, having a valid vote count of 40,703 and an invalid vote count of 171.
Result declared at 06:28 on 8 May 2015.