EVENT 503 Boys 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Corey HESLETINE | 11 | Bassetlaw SS | 1.:15..0 |
| 2 | 2 | Dexter BARRON | 11 | Bassetlaw SS | 1:41.28 |
| 3 | 4 | Reid HUTCHINS | 9 | Bassetlaw SS | 1:21.57 |
| 4 | 3 | Hector WELLINGS | 11 | Rotherham Mo | 1:36.56 |
| 5 | 1 | Oliver LAW | 10 | Etwall | 1:33.09 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Isaac SIMPSON | 10 | Bassetlaw SS | 1:32.15 |
| 2 | 8 | Alfred FARR | 9 | Rotherham Mo | 1:35.62 |
| 3 | 10 | William NEWMAN-CARTER | 10 | Bassetlaw SS | 1:27.00 |
| 4 | 9 | Brendan THOMPSON | 11 | Bassetlaw SS | 1:30.62 |
| 5 | 7 | Valentine STANILAND | 10 | Rotherham Mo | 1:34.93 |
| 6 | 5 | William CASH | 10 | Deepings | 1:40.08 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Xander ARBON | 12 | Bassetlaw SS | 1:25.52 |
| 2 | 14 | Joseph LAW | 13 | Etwall | 1:12.71 |
| 3 | 16 | James TING | 13 | Rotherham Mo | 1:17.97 |
| 4 | 15 | Kieron TOMS | 13 | Deepings | 1:09.99 |
| 5 | 13 | Brayden LEE | 11 | Etwall | 1:24.06 |
| 6 | 11 | Oscar DURHAM | 10 | Bassetlaw SS | 1:26.75 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Toby BANKS | 14 | Eckington | 1:08.15 |
| 2 | 20 | Harry DENWOOD | 13 | Rotherham Mo | 1:08.17 |
| 3 | 22 | Thomas COLLINS | 13 | Bassetlaw SS | 1:07.07 |
| 4 | 21 | Taylor ATKINSON | 14 | Gainsborough | 1:09.02 |
| 5 | 19 | Oliver NUTT | 14 | Etwall | 1:14.62 |
| 6 | 17 | Edward ROSE | 11 | Rotherham Mo | DN:C . |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Leo GARRISON | 16 | Gainsborough | 1:02.56 |
| 2 | 26 | C BUTTERELL-QUANBROUGH | 13 | Bassetlaw SS | 1:00.77 |
| 3 | 28 | Layne KEYWORTH | 15 | Bassetlaw SS | 56.34 |
| 4 | 27 | Samuel GREEN | 13 | Bassetlaw SS | 59.88 |
| 5 | 25 | Danny BARRON | 15 | Etwall | 59.87 |
| 6 | 23 | Reuben MEADOWS | 13 | Bassetlaw SS | 1:03.43 |