EVENT 7 Open/Male 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Patrick MCKEAVENEY | 12 | Cheshunt | |
| 3 | 3 | Max SLEZAK | 15 | Cheshunt | |
| 4 | 2 | Harry BARCLAY | 13 | Cheshunt | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Luke BARTLETT | 12 | Cheshunt | |
| 2 | 6 | Jack EATOCK | 11 | Cheshunt | 1:00.97 |
| 3 | 8 | BOBBY BUTCHER | 9 | Cheshunt | 55.73 |
| 4 | 7 | Ralph MISIR-YATES | 10 | Cheshunt | 57.06 |
| 5 | 5 | Filip ZUK | 14 | Cheshunt | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | FABIO GIAMBRONE | 12 | Cheshunt | 50.66 |
| 2 | 12 | William MARSHALL | 10 | Cheshunt | 41.50 |
| 3 | 14 | Maxwell CROFT | 11 | Cheshunt | 40.49 |
| 4 | 13 | George JONES | 17 | Cheshunt | 40.92 |
| 5 | 11 | HARRY EASTON | 12 | Cheshunt | 42.44 |
| 6 | 9 | Ben BARTLETT | 10 | Cheshunt | 54.09 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | SONNY BULLOCK | 13 | Cheshunt | 35.82 |
| 2 | 18 | Luigi GIAMBRONE | 14 | Cheshunt | 32.59 |
| 3 | 20 | Alfie BULLOCK | 16 | Cheshunt | 28.70 |
| 4 | 19 | Matas ZILINSKAS | 14 | Cheshunt | 32.43 |
| 5 | 17 | Daniel HILLMAN | 14 | Cheshunt | 33.30 |
| 6 | 15 | Adomas SATKEVICIUS | 12 | Cheshunt | 40.31 |