EVENT 308 Open/Male 50m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Jonathan FERNANDES | 10 | Wetherby | 1:10.00 |
| 4 | 4 | Connor SMITH | 11 | Conwy | 1:01.20 |
| 5 | 3 | Ilan LEWIS | 10 | Caernarfon | 1:06.50 |
| 6 | 1 | Joseph FULLER | 9 | Co Sheffield | 1:10.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Euron Fon JONES | 12 | Nofio P.B.P | 56.20 |
| 2 | 8 | Reuben BARKER | 9 | Co Leeds | 54.50 |
| 3 | 10 | Ellis HARGREAVES | 12 | Co Leeds | 51.68 |
| 4 | 12 | Ioan AP ROBERT | 13 | Nofio P.B.P | 51.00 |
| 5 | 11 | Zac PHILLIPS | 10 | Co Leeds | 51.59 |
| 6 | 9 | Maxwell BRYANT | 10 | Connahs Quay | 53.03 |
| 7 | 7 | Callum YOUNG | 9 | Co Leeds | 54.62 |
| 8 | 5 | Steffan Iolo WILLIAMS | 13 | Nofio P.B.P | 56.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Daniel RAWLINGS | 11 | Co Leeds | 49.86 |
| 2 | 16 | Fraser GALBRAITH | 10 | Co Leeds | 49.31 |
| 3 | 18 | Barney HOBBS | 11 | Co Leeds | 48.91 |
| 4 | 20 | Ezel KAFTAR | 12 | Wetherby | 48.30 |
| 5 | 19 | Isaac ROBINSON | 10 | Co Sheffield | 48.45 |
| 6 | 17 | Samuel FORD | 10 | Co Leeds | 49.27 |
| 7 | 15 | Mustafa RAZA | 10 | Co Leeds | 49.80 |
| 8 | 13 | Muhammad RAZA | 12 | Co Leeds | 50.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Jeffrey LANGE | 12 | Co Leeds | 47.40 |
| 2 | 24 | Oscar CALAM | 10 | Co Leeds | 46.32 |
| 3 | 26 | Tomas BICKERS | 12 | Co Leeds | 45.53 |
| 4 | 28 | Hogan LAM | 12 | Co Leeds | 45.17 |
| 5 | 27 | Alfie CRAGGS | 13 | Co Leeds | 45.33 |
| 6 | 25 | Lewis LUNG | 10 | Co Leeds | 46.30 |
| 7 | 23 | Zac Anthony GRANT | 11 | Nofio P.B.P | 47.40 |
| 8 | 21 | Tyler GREEN | 10 | Co Leeds | 47.42 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | Jacob JONES | 12 | Co Leeds | 44.94 |
| 2 | 32 | Oscar HUSSEY | 12 | Co Leeds | 44.87 |
| 3 | 34 | Noah DARNELL | 12 | Co Leeds | 44.48 |
| 4 | 36 | Zachary WHITTAKER | 11 | Co Leeds | 44.38 |
| 5 | 35 | Oscar O'DONNELL | 12 | Co Leeds | 44.47 |
| 6 | 33 | Angus YOUNG | 12 | Co Leeds | 44.74 |
| 7 | 31 | Tyler RAVEN | 11 | Co Leeds | 44.94 |
| 8 | 29 | Oliver BARKER | 11 | Co Leeds | 45.12 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 38 | Matthew OGBUAGU | 12 | Co Leeds | 43.71 |
| 2 | 40 | William DUNN | 13 | Co Leeds | 43.17 |
| 3 | 42 | Jackson CLARKE | 14 | Co Leeds | 42.74 |
| 4 | 44 | Abdullah MOKHLISSE | 14 | Chapeltown | 42.30 |
| 5 | 43 | Zac JONES | 13 | Chadderton | 42.70 |
| 6 | 41 | Leo LI | 11 | Co Leeds | 42.76 |
| 7 | 39 | William LANCASHIRE | 13 | Co Leeds | 43.23 |
| 8 | 37 | Olaf GRUDOWSKI | 12 | Co Leeds | 43.90 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 46 | Owen TEMPEST | 12 | Co Leeds | 41.88 |
| 2 | 48 | Callum FOZARD | 13 | Co Leeds | 41.34 |
| 3 | 50 | Enzo SHILAND-GRIFFITHS | 13 | Caernarfon | 40.30 |
| 4 | 52 | Isaac CHEUNG | 16 | Chadderton | 37.80 |
| 5 | 51 | Harrison WAKE | 12 | Co Leeds | 40.16 |
| 6 | 49 | Dyfan PRICE-CLISHEM | 13 | Nofio P.B.P | 41.16 |
| 7 | 47 | Benjamin CLARK | 12 | Co Leeds | 41.40 |
| 8 | 45 | Oliver ATHA | 12 | Co Leeds | 42.20 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 54 | Alfie BIE | 15 | Connahs Quay | 36.90 |
| 2 | 56 | Matei STOICESCU | 14 | Co Leeds | 35.99 |
| 3 | 58 | Tomos OWEN | 17 | Caernarfon | 33.47 |
| 4 | 60 | Lucas THOMAS | 15 | Conwy | 32.72 |
| 5 | 59 | Addison BIE | 17 | Connahs Quay | 33.28 |
| 6 | 57 | Reuben HARRISON | 14 | Co Leeds | 35.60 |
| 7 | 55 | Owen WILLIAMS | 14 | Caernarfon | 36.36 |
| 8 | 53 | Lewis DAVIES | 14 | Nofio P.B.P | 37.70 |