EVENT 502 Open/Male 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Ho Yeung Desmond KWOK | 15 | Harpenden | |
| 2 | 4 | Kit MANSFIELD | 13 | TigersJersey | 3:26.60 |
| 3 | 6 | Theo RAWNSLEY | 10 | Harpenden | 3:01.60 |
| 4 | 8 | Jack COX | 13 | Ealing | 2:53.80 |
| 5 | 7 | Tobias WATSON | 12 | Bo Southend | 2:57.41 |
| 6 | 5 | Tyler LAVENDER | 12 | Team Luton | 3:23.36 |
| 7 | 3 | Ellis COLLINS | 9 | Bo Southend | 5:20.00 |
| 8 | 1 | Elijah UNSWORTH | 10 | Team Luton | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Lewis COX | 14 | Ealing | 2:38.88 |
| 2 | 12 | Henry CHALONER | 14 | Biggleswade | 2:32.27 |
| 3 | 14 | Casper WHITTAKER | 13 | Biggleswade | 2:31.00 |
| 4 | 16 | Mihailo VUCKOVIC | 14 | Ealing | 2:16.66 |
| 5 | 15 | Harry COOPER | 18 | Rochford | 2:30.00 |
| 6 | 13 | Sami BOUKHTOUCHE | 13 | Ealing | 2:32.20 |
| 7 | 11 | Samuel CHILDS | 13 | Berkhamsted | 2:32.37 |
| 8 | 9 | George DAVEY-CROUCH | 14 | Bo Southend | 2:45.90 |