Before (end of 2005) (58 seats, Elections Centre)
Liberal Democrats 29 · Conservative 17 · Labour 11 · Other 1
After (end of 2006) (58 seats, Elections Centre)
Liberal Democrats 31 · Conservative 18 · Labour 8 · Other 1
Ward results
Harpenden South1 seat
| Teresa Heritage | Conservative | 1,606 ✓ |
| Mary Carden | Liberal Democrats | 313 |
| Linda Spiri | Labour | 160 |
| Eric Harber | Green | 150 |