EVENT 233 Boys 15 Yrs/Over 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Owen Johnson | 15 | S10 | Repton | 1:19.54 |
| 4 | 3 | Beau Birtles | 15 | | Chesterfield | 1:17.50 |
| 5 | 2 | Andrew Edgar | 15 | | Chesterfield | 1:15.46 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 5 | Christopher Oliver | 16 | | Long Eaton | 1:19.58 |
| 2 | 7 | Ewan Ascott | 18 | | Long Eaton | 1:14.29 |
| 3 | 9 | Ethelbert Hems Gilson | 15 | | Repton | 1:15.08 |
| 4 | 11 | N Miller-Walters | 19 | | BelperMarlin | 1:12.07 |
| 5 | 10 | Ollie Palmer | 18 | | Ilkeston | 1:13.27 |
| 6 | 8 | Taylor Reeves | 18 | | Swadlincote | 1:16.48 |
| 7 | 6 | Noah Stevens | 15 | | Rykneld | 1:15.00 |
| 8 | 4 | Carlos Sierra Villegas | 15 | | Chesterfield | 1:10.78 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 15 | Elliott Penney | 17 | | Eckington | 1:12.92 |
| 1 | 21 | Cole Webster | 16 | | BelperMarlin | 1:10.98 |
| 2 | 27 | Alfie Lynch | 15 | | DerbyPhoenix | 1:06.19 |
| 3 | 33 | Harry Milne | 15 | | Repton | 1:07.17 |
| 4 | 39 | Benjamin Twynham | 18 | | Co Derby | 1:03.91 |
| 5 | 36 | Dominic Bools | 20 | | Repton | 1:03.63 |
| 6 | 30 | Carl Kirsopp | 26 | | Rykneld | 1:07.54 |
| 7 | 24 | Oliver Stone | 15 | | Ripley | 1:10.28 |
| 8 | 18 | Isaac Helps | 20 | | Rykneld | 1:10.48 |
| 9 | 12 | Samuel Sargeant | 17 | | Matlock | 1:11.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 16 | James Duggan | 16 | | Swadlincote | 1:11.55 |
| 1 | 22 | G Sierra Villegas | 18 | | Chesterfield | 1:09.53 |
| 2 | 28 | Lewis Brown | 18 | | Ilkeston | 1:07.26 |
| 3 | 34 | Sebastian Ebanks | 16 | | Co Derby | 1:05.26 |
| 4 | 40 | Cameron Jamieson | 16 | | Repton | 1:01.22 |
| 5 | 37 | Ezra Lambert | 17 | | Repton | 1:03.46 |
| 6 | 31 | Archie Heron | 17 | | Co Derby | 1:05.38 |
| 7 | 25 | Dylan Jamieson | 15 | | Repton | 1:05.99 |
| 8 | 19 | Gye Whitlam | 42 | | DerbyPhoenix | 1:10.81 |
| 9 | 13 | Joseph Diacon | 15 | | Dronfield | 1:14.53 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 17 | Joshua Bestwick | 23 | | DerbyPhoenix | 1:16.69 |
| 1 | 23 | Charlie Jeanes | 15 | | Repton | 1:05.83 |
| 2 | 29 | Cole Stevens | 16 | | Chesterfield | 1:07.12 |
| 3 | 35 | Nathan Morgan | 17 | | Repton | 1:02.03 |
| 4 | 41 | Ethan Lawton | 22 | | Co Derby | 59.71 |
| 5 | 38 | George Whittle | 17 | | Ripley | DQ:4..4 |
| 6 | 32 | Martin Iankov | 15 | | DerbyPhoenix | 1:07.45 |
| 7 | 26 | Leo Pollock | 17 | | Repton | 1:05.28 |
| 8 | 20 | Arron Simpson | 16 | | Long Eaton | 1:09.02 |
| 9 | 14 | Harry Maskrey | 16 | | BelperMarlin | 1:16.87 |