EVENT 311 Men 16 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Kian Saville | 23 | S10 | Daventry | 1:26.73 |
| 4 | 3 | Harris Chacksfield | 18 | | Kettering | 1:19.70 |
| 5 | 2 | Jeremiah Muir | 16 | | Kettering | 1:21.96 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 7 | Thomas James | 17 | | Wellingboro | 1:12.99 |
| 2 | 13 | Alexander Menshutkin | 16 | | Kettering | 1:07.25 |
| 3 | 19 | Albert Malsher | 20 | | Rushden | 1:02.30 |
| 4 | 25 | Ryan Coles | 18 | | Daventry | 1:00.01 |
| 5 | 22 | Samuel Smith | 18 | | Northampton | 1:00.54 |
| 6 | 16 | Sam Gray | 16 | | Northampton | 1:05.91 |
| 7 | 10 | Louis Booker | 16 | | Wellingboro | 1:10.52 |
| 8 | 4 | Matthew Taylor | 16 | | Northampton | 1:16.41 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 8 | Jack Kentish | 16 | | Daventry | 1:12.47 |
| 2 | 14 | Cameron Bell | 16 | | Rushden | 1:06.85 |
| 3 | 20 | Max Balderson | 20 | | Rushden | 1:02.26 |
| 4 | 26 | Samuel Cooke | 17 | | Corby | 59.20 |
| 5 | 23 | Adam Frazer | 17 | | Rushden | 1:00.48 |
| 6 | 17 | Harry Faulkner | 17 | | Wellingboro | 1:05.31 |
| 7 | 11 | Noah Wrightson | 19 | | Wellingboro | 1:10.14 |
| 8 | 5 | Filip Kanikowski | 20 | | Kettering | 1:15.71 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 9 | James Plenderleith | 16 | | Corby | 1:12.40 |
| 2 | 15 | Bobby Phillips | 18 | | Wellingboro | 1:06.58 |
| 3 | 21 | Tyler Coles | 17 | | Daventry | 1:00.90 |
| 4 | 27 | Marcus Eaton | 29 | | Rushden | 59.05 |
| 5 | 24 | Aaron Warren | 22 | | Northampton | 1:00.10 |
| 6 | 18 | Ethan Randall | 17 | | Corby | 1:04.76 |
| 7 | 12 | Elliott Barker | 16 | | Northampton | 1:09.99 |
| 8 | 6 | Thomas Leak | 16 | | Kettering | 1:13.40 |