EVENT 206 Open/Male 09 /Over 100m Breaststrok - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Oscar BEMBRIDGE | 10 | Grantham | |
| 2 | 2 | Henry BOWERS | 10 | Grantham | |
| 3 | 3 | Louis THOMPSON | 11 | Grantham | 2:07.37 |
| 4 | 4 | Henry LEONARD | 10 | Grantham | 1:48.91 |
| 5 | 5 | George DOLAN | 10 | Grantham | 1:48.48 |
| 6 | 6 | Cyril BAO | 10 | Grantham | 1:43.00 |
| 7 | 7 | Daniel GODDARD | 11 | Grantham | 1:42.95 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Freddie HIRST | 12 | Grantham | 1:42.34 |
| 2 | 9 | Joshua KIM | 14 | Grantham | 1:39.89 |
| 3 | 10 | William PENNOCK | 12 | Grantham | 1:37.20 |
| 4 | 11 | Benjamin SHEARN | 12 | Grantham | 1:37.08 |
| 5 | 12 | Jimmin BAO | 13 | Grantham | 1:36.15 |
| 6 | 13 | Derrin BROCKLEBANK | 12 | Grantham | 1:35.07 |
| 7 | 14 | Benjamin GODDARD | 13 | Grantham | 1:33.87 |
| 8 | 15 | Elliot GLEAVE | 13 | Grantham | 1:30.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Louis WRIGHT | 13 | Grantham | 1:30.71 |
| 2 | 17 | Thomas HILLSON | 13 | Grantham | 1:29.93 |
| 3 | 18 | George LEONARD | 14 | Grantham | 1:29.46 |
| 4 | 19 | Thomas KINNEAR | 15 | Grantham | 1:29.33 |
| 5 | 20 | Arthur BREARLEY-NEWSOM | 15 | Grantham | 1:29.16 |
| 6 | 21 | Leo BARNETT | 14 | Grantham | 1:27.20 |
| 7 | 22 | Toby EDMONDSON | 12 | Grantham | 1:26.48 |
| 8 | 23 | Markas PARAPIJONAVICIU | 13 | Grantham | 1:25.29 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Ben CARLYLE | 16 | Grantham | 1:23.30 |
| 2 | 27 | Francesco MONACO | 14 | Grantham | 1:14.94 |
| 3 | 29 | James DOBNEY | 22 | Grantham | 1:11.55 |
| 4 | 31 | Benjamin ROBERTS | 17 | Grantham | 1:03.83 |
| 5 | 30 | Zach HOPKINSON | 17 | Grantham | 1:07.44 |
| 6 | 28 | Ben LORD | 21 | Grantham | 1:12.75 |
| 7 | 26 | Kieran LUCY | 16 | Grantham | 1:18.92 |
| 8 | 24 | Henry DOLAN | 13 | Grantham | 1:23.83 |