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 |
| Witney | PEEDELL, Clive | 79,767 | 73.3% | 616 | 1.1% | - | 6th |
| Truro and Falmouth | EVANS, Rik | 73,601 | 70.0% | 526 | 1.0% | - | 8th |
| Sutton and Cheam | ASH, Dave | 69,228 | 72.1% | 345 | 0.7% | - | 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 |
| Oxford West and Abingdon | SALISBURY, Helen | 76,174 | 75.2% | 723 | 1.3% | - | 6th |
| 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 |
| East Worthing and Shoreham | WALKER, Carl | 74,775 | 66.7% | 1,243 | 2.5% | - | 6th |
| Camberwell and Peckham | FOX, Rebecca | 82,746 | 62.3% | 466 | 0.9% | - | 7th |
| Banbury | EDWARDS, Roseanne | 86,420 | 67.1% | 729 | 1.3% | - | 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.