EVENT 104 Open/Male 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Benjamin PISCOPO | 10 | Co Peterboro | 1:46.80 |
| 3 | 3 | George SWALES | 10 | Nova Cent'n | 1:39.80 |
| 4 | 5 | Alfie LARHAM | 11 | Co Peterboro | 1:33.14 |
| 5 | 4 | Ahmet YESIL | 11 | Nova Cent'n | 1:33.90 |
| 6 | 2 | Ethan CRAVEN | 10 | Warrington W | 1:41.01 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Zachary PISCOPO | 12 | Co Peterboro | 1:29.70 |
| 2 | 9 | Charlie BISBY | 12 | South Lincs | 1:26.50 |
| 3 | 11 | Andrei LEVINTA | 13 | Co Peterboro | 1:22.81 |
| 4 | 13 | Patryk NOWAK | 13 | Co Peterboro | 1:21.90 |
| 5 | 12 | Kameron BAKER | 12 | Co Peterboro | 1:21.97 |
| 6 | 10 | Mihai LEVINTA | 12 | Co Peterboro | 1:25.45 |
| 7 | 8 | Jason LI | 11 | Co Birm'ham | 1:27.85 |
| 8 | 6 | Mark KIRALY | 11 | Nova Cent'n | 1:31.92 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Thomas LOWTON | 13 | Nova Cent'n | 1:19.15 |
| 2 | 17 | Frank LAMB | 14 | Co Peterboro | 1:17.95 |
| 3 | 19 | Jack JARVIS | 15 | Flixton | 1:14.03 |
| 4 | 21 | Joseph STORR | 14 | Co Coventry | 1:13.85 |
| 5 | 20 | James FOTHERGILL | 14 | Flixton | 1:13.90 |
| 6 | 18 | Sam MACER | 15 | Repton | 1:14.80 |
| 7 | 16 | Freddie WOOD | 13 | Rotherham Mo | 1:19.15 |
| 8 | 14 | Finley SPOONER | 13 | Cheadle | 1:20.65 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Jake ADAMS | 15 | Louth | 1:12.99 |
| 2 | 25 | Harrison CLARKE | 15 | Nova Cent'n | 1:11.69 |
| 3 | 27 | Oscar GOLDSMITH | 15 | South Lincs | 1:10.74 |
| 4 | 29 | Luke CHAMBERS | 15 | Nova Cent'n | 1:10.45 |
| 5 | 28 | Oscar DONNELLY | 14 | Co Liverpool | 1:10.62 |
| 6 | 26 | Max HOLLAND | 15 | Nova Cent'n | 1:11.67 |
| 7 | 24 | Leroy SHIH | 13 | Co Birm'ham | 1:12.38 |
| 8 | 22 | Kieran NG | 13 | Co Peterboro | 1:13.67 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Finnian MALCOLM | 16 | Co Manch Aq | 1:10.38 |
| 2 | 33 | Finlay NELSON | 16 | Dumfries | 1:09.24 |
| 3 | 35 | Cameron RHODES | 18 | Rotherham Mo | 1:08.27 |
| 4 | 37 | Llewellyn PORTER | 15 | Camden Swiss | 1:08.20 |
| 5 | 36 | Benjamin ROBERTS | 14 | Nova Cent'n | 1:08.20 |
| 6 | 34 | Luke ROWLEY | 18 | Sandwell | 1:08.58 |
| 7 | 32 | Thomas O'BRIEN | 15 | Stockport Mo | 1:09.50 |
| 8 | 30 | Gagan SINGH | 17 | Co Peterboro | 1:10.43 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 39 | Cameron MCQUADE | 16 | Cosacss | 1:08.00 |
| 2 | 41 | Jonathon WATERS | 15 | Preston | 1:07.23 |
| 3 | 43 | Harry MORRIS | 17 | Newcastle St | 1:07.00 |
| 4 | 45 | Joshua SACKREE | 15 | Co Peterboro | 1:06.49 |
| 5 | 44 | Daniel HOLLISS | 17 | Co St Albans | 1:07.00 |
| 6 | 42 | Lewis DAWSON | 17 | Enfield Sq | 1:07.20 |
| 7 | 40 | Josh MARTIN | 17 | Co Peterboro | 1:07.60 |
| 8 | 38 | Oliver RICHMOND | 14 | Nova Cent'n | 1:08.00 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 47 | Finley LOWE | 15 | Co Birm'ham | 1:05.70 |
| 2 | 49 | James ABULENCIA | 17 | Co Birm'ham | 1:04.50 |
| 3 | 51 | Michael EDWARDS | 19 | Lboro Uni | 1:02.90 |
| 4 | 53 | Mackenzie CANNON | 21 | Lboro Uni | 1:02.30 |
| 5 | 52 | Oliver TAVERNER | 22 | Lboro Uni | 1:02.80 |
| 6 | 50 | Luke JONES | 18 | Bromsgrove | 1:04.02 |
| 7 | 48 | Daniel OYAIDE-NICHOLLS | 16 | NottmLeander | 1:04.92 |
| 8 | 46 | William MILES | 18 | Lboro Uni | 1:06.30 |