EVENT 114 Boys 15 Yrs/Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Harry Aston | 15 | Etwall | DQ:7..1 |
| 2 | 4 | Ewan Borg | 16 | DerbyPhoenix | 1:25.97 |
| 3 | 6 | Andrew Edgar | 15 | Chesterfield | 1:27.07 |
| 4 | 8 | Harry Milne | 15 | Repton | 1:24.89 |
| 5 | 7 | Charlie Jeanes | 15 | Repton | 1:25.07 |
| 6 | 5 | Joseph Diacon | 15 | Dronfield | DN:C . |
| 7 | 3 | Benjamin Kadoch | 17 | Etwall | 1:24.95 |
| 8 | 1 | Joseph Maskrey | 15 | BelperMarlin | 1:27.98 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Finley O'Neill | 17 | Ilkeston | 1:23.78 |
| 1 | 18 | Noah Van Hoorebeek | 16 | Eckington | 1:16.77 |
| 2 | 24 | Joshua Atterbury | 17 | Ripley | 1:16.79 |
| 3 | 30 | Cole Stevens | 16 | Chesterfield | 1:14.41 |
| 4 | 36 | Dominic Bools | 20 | Repton | 1:08.86 |
| 5 | 33 | Jacob Hamblen | 18 | Etwall | 1:09.14 |
| 6 | 27 | Aaron Johnson | 17 | Repton | 1:16.67 |
| 7 | 21 | Oliver Osborne | 16 | Long Eaton | 1:16.30 |
| 8 | 15 | Alfie Lynch | 15 | DerbyPhoenix | 1:21.85 |
| 9 | 9 | Ewan Ascott | 18 | Long Eaton | 1:22.37 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 13 | Harrison Grix-White | 15 | Spinkhill | 1:19.22 |
| 1 | 19 | Rory Burch | 16 | Matlock | 1:22.27 |
| 2 | 25 | Marc Jourdain | 16 | Buxton | 1:19.71 |
| 3 | 31 | Luke Witten | 19 | Long Eaton | 1:13.78 |
| 4 | 37 | Max Wass | 20 | Co Derby | 1:08.32 |
| 5 | 34 | George Whittle | 17 | Ripley | 1:11.89 |
| 6 | 28 | Lewis Brown | 18 | Ilkeston | 1:16.43 |
| 7 | 22 | Freddie Postlethwaite | 18 | Ripley | DN:C . |
| 8 | 16 | Oliver Henshaw | 15 | BelperMarlin | 1:19.51 |
| 9 | 10 | Jacob Helps | 17 | Repton | 1:19.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 14 | Quinn Coppen | 15 | Long Eaton | 1:23.58 |
| 1 | 20 | Sam Macer | 15 | Repton | 1:20.54 |
| 2 | 26 | Christopher Oliver | 16 | Long Eaton | 1:17.93 |
| 3 | 32 | Archie Heron | 17 | Co Derby | 1:13.76 |
| 4 | 38 | Jack Blair | 25 | Chesterfield | 1:05.46 |
| 5 | 35 | Ethan Lawton | 22 | Co Derby | DN:C . |
| 6 | 29 | Oliver Gillott | 17 | Dronfield | 1:15.23 |
| 7 | 23 | N Miller-Walters | 19 | BelperMarlin | 1:16.39 |
| 8 | 17 | Sebastian Ebanks | 16 | Co Derby | 1:19.06 |
| 9 | 11 | James Duggan | 16 | Swadlincote | 1:25.63 |