EVENT 107 Open/Male 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Jayden GRAY-THOMAS | 12 | Conwy | 59.20 |
| 2 | 4 | Mustafa RAZA | 10 | Co Leeds | 49.20 |
| 3 | 6 | Theo SIRA | 10 | Co Leeds | 46.80 |
| 4 | 8 | Reuben BARKER | 9 | Co Leeds | 44.99 |
| 5 | 7 | George BEILBY-WOODWARD | 10 | Co Leeds | 46.07 |
| 6 | 5 | Frederick GREENWOOD | 11 | Co Sheffield | 48.61 |
| 7 | 3 | Connor SMITH | 11 | Conwy | 50.80 |
| 8 | 1 | Oliver SHEPHARD | 9 | Co Sheffield | 1:01.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Ioan AP ROBERT | 13 | Nofio P.B.P | 44.30 |
| 2 | 12 | Lewis LUNG | 10 | Co Leeds | 43.02 |
| 3 | 14 | Fraser GALBRAITH | 10 | Co Leeds | 42.13 |
| 4 | 16 | Samuel FORD | 10 | Co Leeds | 41.96 |
| 5 | 15 | Daniel RAWLINGS | 11 | Co Leeds | 42.04 |
| 6 | 13 | Euron Fon JONES | 12 | Nofio P.B.P | 42.60 |
| 7 | 11 | Muhammad RAZA | 12 | Co Leeds | 43.60 |
| 8 | 9 | Zac Anthony GRANT | 11 | Nofio P.B.P | 44.57 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Henry PATTERSON | 10 | Co Leeds | 40.70 |
| 2 | 20 | Liam LI | 9 | Co Leeds | 40.00 |
| 3 | 22 | Barney HOBBS | 11 | Co Leeds | 38.90 |
| 4 | 24 | George KING | 11 | Co Leeds | 37.46 |
| 5 | 23 | Oscar CALAM | 10 | Co Leeds | 38.56 |
| 6 | 21 | Finn EASINGWOOD | 11 | Co Leeds | 39.45 |
| 7 | 19 | Euan CARMODY | 10 | Co Leeds | 40.30 |
| 8 | 17 | Tyler GREEN | 10 | Co Leeds | 41.30 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Noah DARNELL | 12 | Co Leeds | 37.11 |
| 2 | 28 | Tomas BICKERS | 12 | Co Leeds | 36.56 |
| 3 | 30 | Hogan LAM | 12 | Co Leeds | 36.40 |
| 4 | 32 | Dyfan PRICE-CLISHEM | 13 | Nofio P.B.P | 35.80 |
| 5 | 31 | Harrison WAKE | 12 | Co Leeds | 35.83 |
| 6 | 29 | Harrison LEONARD | 12 | Conwy | 36.50 |
| 7 | 27 | Harley GILL | 12 | Co Leeds | 37.00 |
| 8 | 25 | Leo CLEGG | 12 | Conwy | 37.40 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 34 | Zac JONES | 13 | Chadderton | 35.70 |
| 2 | 36 | Oliver ATHA | 12 | Co Leeds | 34.75 |
| 3 | 38 | Now PARRY | 14 | Caernarfon | 34.72 |
| 4 | 40 | Oscar HUSSEY | 12 | Co Leeds | 34.53 |
| 5 | 39 | Olaf GRUDOWSKI | 12 | Co Leeds | 34.64 |
| 6 | 37 | Alfie CRAGGS | 13 | Co Leeds | 34.72 |
| 7 | 35 | Jeffrey LANGE | 12 | Co Leeds | 34.85 |
| 8 | 33 | Zachary WHITTAKER | 11 | Co Leeds | 35.72 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 42 | Tyler RAVEN | 11 | Co Leeds | 34.19 |
| 2 | 44 | Jacob ROCCHI | 13 | Co Sheffield | 33.48 |
| 3 | 46 | Oscar O'DONNELL | 12 | Co Leeds | 32.97 |
| 4 | 48 | Lewis DAVIES | 14 | Nofio P.B.P | 32.84 |
| 5 | 47 | Callum FOZARD | 13 | Co Leeds | 32.87 |
| 6 | 45 | Matthew OGBUAGU | 12 | Co Leeds | 33.03 |
| 7 | 43 | Demilade AYEMOWA | 13 | Co Leeds | 34.15 |
| 8 | 41 | Oliver BARKER | 11 | Co Leeds | 34.47 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 50 | Owen WILLIAMS | 14 | Caernarfon | 31.83 |
| 2 | 52 | Matei STOICESCU | 14 | Co Leeds | 30.78 |
| 3 | 54 | Ewan LEONARD | 15 | Conwy | 29.16 |
| 4 | 56 | Addison BIE | 17 | Connahs Quay | 28.80 |
| 5 | 55 | Alfie BIE | 15 | Connahs Quay | 29.00 |
| 6 | 53 | Tomos OWEN | 17 | Caernarfon | 30.50 |
| 7 | 51 | James WREN | 16 | Connahs Quay | 31.10 |
| 8 | 49 | William DUNN | 13 | Co Leeds | 32.51 |