EVENT 502 Open/Male 09 /Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Oscar Pawlowski | 9 | | Corby | 1:40.40 |
| 4 | 2 | Oscar Cutmore | 10 | | Corby | 1:39.90 |
| 5 | 3 | Sennen Tovey | 10 | | Co Coventry | 1:28.14 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 4 | Nathan Woods | 12 | | Co Coventry | 1:18.03 |
| 2 | 5 | Porter Tinning | 13 | | Co Coventry | 1:16.78 |
| 3 | 6 | Aiden Horne | 12 | | Corby | 1:16.60 |
| 4 | 7 | Ryan Doyle | 13 | | Kettering | 1:09.74 |
| 5 | 8 | Ben Carlyle | 14 | | Grantham | 1:09.50 |
| 6 | 9 | Rejus Mazeika | 13 | | West Norfolk | 1:08.64 |
| 7 | 10 | Benjamin Lee | 16 | | Solihull | 1:07.66 |
| 8 | 11 | Zach Montgomery | 14 | | Norwich Swan | 1:07.21 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 13 | Alexander Pattison | 14 | | West Norfolk | 1:05.39 |
| 2 | 15 | Daniel Grimmer | 17 | | West Norfolk | 1:03.18 |
| 3 | 17 | Hayden North | 19 | | Co Coventry | 1:02.81 |
| 4 | 19 | Elliot Lawton | 16 | | Co Coventry | 1:02.20 |
| 5 | 18 | Daniel Wilks | 17 | | Leamington | 1:02.33 |
| 6 | 16 | Max Edginton | 16 | | Cannock Phnx | 1:03.11 |
| 7 | 14 | Daniel Doyle | 16 | | Kettering | 1:03.39 |
| 8 | 12 | Harvey Isle | 19 | | West Norfolk | 1:06.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 21 | James Fothergill | 15 | | Co Manch Aq | 1:01.52 |
| 2 | 23 | Jamie Wilson | 15 | | West Norfolk | 1:01.17 |
| 3 | 25 | Benedict Measures | 19 | | Norwich Swan | 1:00.40 |
| 4 | 27 | Samuel Rose | 21 | | West Norfolk | 59.17 |
| 5 | 26 | Cole Angell | 16 | | Kettering | 1:00.05 |
| 6 | 24 | Oscar Hunter | 15 | | Norwich Swan | 1:00.54 |
| 7 | 22 | Jorge Rey | 16 | | Severnside | 1:01.30 |
| 8 | 20 | Oscar Townsend | 16 | | Ledbury | 1:01.97 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 29 | Tyler Holland | 16 | | EllesmereCSA | 58.70 |
| 2 | 31 | Jude Gunner | 15 | S14 | Norwich Swan | 58.50 |
| 3 | 33 | Charlie Rounce | 17 | | Leamington | 58.30 |
| 4 | 35 | Patrick Dea | 17 | | Co Coventry | 57.90 |
| 5 | 34 | Theoharis Bramwell | 15 | | Co Coventry | 58.20 |
| 6 | 32 | Alberto Rescigno | 17 | | EllesmereCSA | 58.40 |
| 7 | 30 | Sami Prysor | 16 | | EllesmereCSA | 58.54 |
| 8 | 28 | Timon Chapman | 23 | | Norwich Swan | 58.81 |