EVENT 403 Open/Male 200m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 1 | Remy COOK | 16 | Bridport Bar | 4:55.08 |
| 3 | 3 | Cooper STROHM | 15 | Poole | 4:04.97 |
| 4 | 2 | Teodor MOHIRTA | 13 | Seagulls SC | 4:44.88 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 5 | Joseph RUDD | 13 | Weymouth | 3:55.19 |
| 3 | 7 | Ralph VEARNCOMBE | 14 | Poole | 3:51.05 |
| 4 | 6 | Louie WAY | 12 | Weymouth | 3:54.84 |
| 5 | 4 | Edward KEEN | 13 | Bridport Bar | 4:03.98 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 9 | Jenson LOWE | 12 | Poole | 3:31.11 |
| 2 | 11 | Joseph SUTTON | 11 | Wareham | 3:14.23 |
| 3 | 13 | Benjamin KEEPING | 09 | Bridport Bar | 2:44.35 |
| 4 | 12 | Harry JOHNSON | 10 | Blandford | 3:04.03 |
| 5 | 10 | Harry HENSHAW | 12 | West Dorset | 3:18.17 |
| 6 | 8 | Max PALMER | 14 | S Bournem'th | 3:39.41 |