An election to the 56th Parliament of the United Kingdom for the constituency area of Islington South and Finsbury, held as part of the general election on 7 May 2015.
Labour hold by Emily Thornberry with a majority of 12,708 - 28.7% - on a turnout of 65.0%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| THORNBERRY, Emily | Lab | 22,547 | 50.9% | 8.7% |
| LIM, Mark | Con | 9,839 | 22.2% | 2.8% |
| STACY, Terry | LD | 4,829 | 10.9% | -23.2% |
| MUSWELL, Pete | UKIP | 3,375 | 7.6% | 6.0% |
| KISS, Charlie | Green | 3,371 | 7.6% | 6.0% |
| KIRTON, Jay | CSA | 309 | 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 68,127, having a valid vote count of 44,270 and an invalid vote count of 151.
Result declared at 02:37 on 8 May 2015.