An election to the 56th Parliament of the United Kingdom for the constituency area of Uxbridge and South Ruislip, held as part of the general election on 7 May 2015.
Conservative hold by Boris Johnson with a majority of 10,695 - 23.9% - on a turnout of 63.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| JOHNSON, Boris | Con | 22,511 | 50.2% | 2.0% |
| SUMMERS, Chris | Lab | 11,816 | 26.4% | 3.0% |
| DUFFIN, Jack | UKIP | 6,346 | 14.2% | 11.4% |
| COX, Michael | LD | 2,215 | 4.9% | -15.0% |
| LEE, Graham | Green | 1,414 | 3.2% | 2.1% |
| HARBORD, Gary | TUSC | 180 | 0.4% | - |
| THOMPSON, Jenny | Ind | 84 | 0.2% | - |
| HOPE, Howling 'Laud' | MRLP | 72 | 0.2% | - |
| MOOSUN, Sabrina | CMU | 52 | 0.1% | - |
| JUG, Lord Toby | EPGB | 50 | 0.1% | - |
| DOHERTY, Michael | Ind | 39 | 0.1% | - |
| LAWRENCE, Jane | TRP | 18 | 0.0% | - |
| JACKSON, James | Ind | 14 | 0.0% | - |
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 70,631, having a valid vote count of 44,811 and an invalid vote count of 103.
Result declared at 04:35 on 8 May 2015.