The Brexit Party By-elections
| Election | Constituency | Candidate | Vote count | Vote share | Position |
| 1 August 2019 | Brecon and Radnorshire | Des Parkinson | 3,331 | 10.5% | 3rd |
| 6 June 2019 | Peterborough | Mike Greene | 9,801 | 28.9% | 2nd |
| Election | Constituency | Candidate | Vote count | Vote share | Position |
| 1 August 2019 | Brecon and Radnorshire | Des Parkinson | 3,331 | 10.5% | 3rd |
| 6 June 2019 | Peterborough | Mike Greene | 9,801 | 28.9% | 2nd |