Communist Party of Britain By-elections
| Election | Constituency | Candidate | Vote count | Vote share | Position |
| 29 November 2012 | Croydon North | Ben Stevenson | 119 | 0.5% | 9th |
| 15 November 2012 | Cardiff South and Penarth | Robert Griffiths | 213 | 1.1% | 8th |
| Election | Constituency | Candidate | Vote count | Vote share | Position |
| 29 November 2012 | Croydon North | Ben Stevenson | 119 | 0.5% | 9th |
| 15 November 2012 | Cardiff South and Penarth | Robert Griffiths | 213 | 1.1% | 8th |