EVENT 406 Boys 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Oliver LAW | 10 | Etwall | 2:13.79 |
| 2 | 4 | Jack DUNN | 12 | Etwall | 2:05.00 |
| 3 | 6 | William CASH | 10 | Deepings | 2:00.00 |
| 4 | 5 | Joseph LAW | 13 | Etwall | 2:05.00 |
| 5 | 3 | Adomas RUDYS | 9 | Bassetlaw SS | 2:08.15 |
| 6 | 1 | Hector WELLINGS | 11 | Rotherham Mo | 2:16.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Oscar HARDY | 12 | Etwall | 1:53.40 |
| 2 | 10 | Corey HESELTINE | 11 | Bassetlaw SS | 1:46.62 |
| 3 | 12 | James TING | 13 | Rotherham Mo | 1:46.40 |
| 4 | 11 | Xander ARBON | 12 | Bassetlaw SS | 1:46.56 |
| 5 | 9 | William NEWMAN-CARTER | 10 | Bassetlaw SS | 1:49.34 |
| 6 | 7 | Oscar DURHAM | 10 | Bassetlaw SS | 1:56.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Joshua BAYLEY | 13 | Etwall | 1:40.35 |
| 2 | 16 | Oliver NUTT | 14 | Etwall | 1:37.69 |
| 3 | 18 | James CASH | 13 | Deepings | 1:29.79 |
| 4 | 17 | Jacob SMYTH | 15 | Eckington | 1:34.00 |
| 5 | 15 | Frederick WILLIAMS | 11 | Eckington | 1:40.20 |
| 6 | 13 | Brayden LEE | 11 | Etwall | 1:42.70 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Samuel GREEN | 13 | Bassetlaw SS | 1:23.10 |
| 2 | 22 | Thomas COLLINS | 13 | Bassetlaw SS | 1:20.77 |
| 3 | 24 | Jacob HODKINSON | 16 | Bassetlaw SS | 1:11.70 |
| 4 | 23 | Jacob BRIERS | 15 | Deepings | 1:15.53 |
| 5 | 21 | Harry NEWMAN | 17 | Deepings | 1:20.80 |
| 6 | 19 | Reuben MEADOWS | 13 | Bassetlaw SS | 1:25.82 |