Before (end of 2025) (41 seats, Open Council Data)
Green 16 · Liberal Democrats 14 · Labour 8 · Other 3
After (end of 2026) (41 seats, Open Council Data)
Green 18 · Liberal Democrats 14 · Labour 8 · Other 1
Ward results
Newhaven South2 seats · turnout 37.7%
| James Harrison | Liberal Democrats | 1,105 ✓ |
| Jo Pettitt | Liberal Democrats | 1,059 ✓ |
| Archie Barry Edward Wilson | Reform UK | 550 |
| Bill Payne | Reform UK | 474 |
| Scott Burrell | Green | 261 |
| Tai Ray-Jones | Green | 232 |
| Catherine Boorman | Conservative | 151 |
| Richard Turner | Conservative | 108 |
| Joe Moughrabi | Labour | 102 |