Results for the UK general election on 7 May 2015 England - Elections contested by National Health Action Party
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Position |
| Sutton and Cheam | ASH, Dave | 69,228 | 72.1% | 345 | 0.7% | - | 6th |
| Banbury | EDWARDS, Roseanne | 86,420 | 67.1% | 729 | 1.3% | - | 6th |
| Truro and Falmouth | EVANS, Rik | 73,601 | 70.0% | 526 | 1.0% | - | 8th |
| Camberwell and Peckham | FOX, Rebecca | 82,746 | 62.3% | 466 | 0.9% | - | 7th |
| Old Bexley and Sidcup | GILL, Bob | 66,035 | 70.8% | 1,216 | 2.6% | - | 6th |
| Maidstone and The Weald | HOBDAY, Paul | 73,181 | 68.3% | 583 | 1.2% | - | 6th |
| Stafford | HOWELL, Karen | 68,705 | 71.0% | 1,701 | 3.5% | - | 4th |
| South West Surrey | IRVINE, Louise | 77,548 | 73.7% | 4,851 | 8.5% | - | 4th |
| Witney | PEEDELL, Clive | 79,767 | 73.3% | 616 | 1.1% | - | 6th |
| Oxford West and Abingdon | SALISBURY, Helen | 76,174 | 75.2% | 723 | 1.3% | - | 6th |
| East Worthing and Shoreham | WALKER, Carl | 74,775 | 66.7% | 1,243 | 2.5% | - | 6th |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
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.