| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | A.G. | Club | Time |
| 1 | 2 | Swim B'mth 'B' | S Bournem'th | 2:45.00 | |
| 2 | 4 | Weymouth SC | Weymouth | 2:28.12 | |
| 3 | 6 | Poole 'A' | Poole | 2:23.30 | |
| 4 | 5 | Swim B'mth 'A' | S Bournem'th | 2:25.00 | |
| 5 | 3 | Poole 'B' | Poole | 2:35.46 | |
| 6 | 1 | West Dorset SC | West Dorset | 3:12.00 | |