EVENT 503 Men Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Mike Agoston | 15 | Redditch | 1:15.50 |
| 3 | 4 | George Upton | 14 | Kingsbury | 1:14.97 |
| 4 | 6 | Metin Ulukus | 14 | Perry B & TS | 1:14.24 |
| 5 | 5 | Alistair Ristov | 14 | Strat Sharks | 1:14.86 |
| 6 | 3 | Hugh Mason-Williams | 13 | Co Birm'ham | 1:15.22 |
| 7 | 1 | Ned Stevens | 14 | Leamington | 1:15.56 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Levente Oravecz | 17 | Nuneaton | 1:13.98 |
| 2 | 10 | Joe South | 17 | Halesowen | 1:13.96 |
| 3 | 12 | Rory Bristoll | 16 | Wellington M | 1:13.86 |
| 4 | 14 | James Page | 14 | Co Birm'ham | 1:13.44 |
| 5 | 13 | Finn Drysdale | 16 | Royal Wolv | 1:13.57 |
| 6 | 11 | Axel Martin | 14 | Leamington | 1:13.96 |
| 7 | 9 | Harry Morris | 15 | Newcastle St | 1:13.97 |
| 8 | 7 | Jay Waite | 14 | Co Coventry | 1:14.22 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Owen Perkins | 16 | Solihull | 1:13.10 |
| 2 | 18 | Guy Tinwell | 16 | Newcastle St | 1:12.82 |
| 3 | 20 | Harvey Flint | 17 | Strat Sharks | 1:12.74 |
| 4 | 22 | Max Wainwright | 15 | Cheadle | 1:12.51 |
| 5 | 21 | Joseph-George Troth | 15 | Bromsgrove | 1:12.68 |
| 6 | 19 | Corey Smith | 15 | Co Birm'ham | 1:12.77 |
| 7 | 17 | Cameron McQuade | 14 | Cosacss | 1:12.85 |
| 8 | 15 | Matthew Blinko | 14 | Kingsbury | 1:13.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Ryan Leathem | 20 | Cosacss | 1:12.47 |
| 2 | 26 | William Tonks | 13 | Boldmere | 1:12.30 |
| 3 | 28 | Callum Rogers | 18 | Nuneaton | 1:12.03 |
| 4 | 30 | Jack Aldridge | 18 | Birm'ham Uni | 1:11.30 |
| 5 | 29 | Tom Garner | 17 | Solihull | 1:11.44 |
| 6 | 27 | Luca Whaley | 15 | Oldbury | 1:12.13 |
| 7 | 25 | Sam Millington-Marsh | 20 | Ludlow | 1:12.33 |
| 8 | 23 | Lewis Hickman | 14 | Royal Wolv | 1:12.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Joe Ritson | 16 | Wrekin Coll | 1:10.90 |
| 2 | 34 | Luke Rowley | 16 | Warley Wasps | 1:09.85 |
| 3 | 36 | James Abulencia | 15 | Co Birm'ham | 1:08.56 |
| 4 | 38 | Jamie Dark | 18 | Birm'ham Uni | 1:07.89 |
| 5 | 37 | Oliver Caddick | 16 | Chase | 1:08.44 |
| 6 | 35 | Harvey Lloyd | 20 | Worcester | 1:09.32 |
| 7 | 33 | Edward Cox | 17 | Worcester | 1:10.43 |
| 8 | 31 | Luke Jones | 16 | Bromsgrove | 1:11.09 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Ethan Ellis-Sixsmith | 18 | Royal Wolv | 1:07.68 |
| 2 | 42 | Jacob Elliott | 19 | Bromsgrove | 1:07.15 |
| 3 | 44 | Thomas Hamilton | 20 | Birm'ham Uni | 1:05.20 |
| 4 | 46 | Karnell Nunes-Smith | 17 | Orion | 1:03.74 |
| 5 | 45 | Max Wass | 18 | Cosacss | 1:05.06 |
| 6 | 43 | Joe Stratton | 17 | Royal Wolv | 1:05.65 |
| 7 | 41 | Buddy Deakes | 17 | Newcastle St | 1:07.15 |
| 8 | 39 | Andrew Jones | 17 | Royal Wolv | 1:07.80 |