EVENT 18 Open/Male 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 1 | Rory NESS | 13 | Bourmth Coll | 1:07.72 |
| 3 | 3 | Herbie HENSTONE | 13 | Seagulls SC | 1:05.19 |
| 4 | 2 | Milan ZAGANYCH | 15 | Seagulls SC | 1:06.49 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 5 | Max PALMER | 14 | Poole | 1:01.85 |
| 2 | 7 | Maxwell BLAKE-EVERDEN | 13 | Weymouth | 59.99 |
| 3 | 9 | Ezra DOWDS | 15 | Seagulls SC | 54.45 |
| 4 | 8 | Daniel BEATON | 14 | Seagulls SC | 56.58 |
| 5 | 6 | Harry MORGAN | 13 | S Bournem'th | 1:00.06 |
| 6 | 4 | Louie WAY | 12 | Weymouth | 1:04.79 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 11 | Stanley WEIGHELL | 15 | Seagulls SC | 51.99 |
| 2 | 13 | Joseph RUDD | 13 | Weymouth | 48.01 |
| 3 | 15 | Charlie GREEN | 12 | S Bournem'th | 40.86 |
| 4 | 14 | Elliot DOWDS | 12 | Seagulls SC | 45.50 |
| 5 | 12 | Wlliam GOOM | 15 | Weymouth | 50.35 |
| 6 | 10 | Micah LIVELY | 14 | Weymouth | 52.68 |