EVENT 204 Boys 09 Yrs/Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Austin CHEN-REES | 9 | Grantham | 2:45.00 |
| 4 | 2 | Dylan MACKIE | 11 | March | 2:40.26 |
| 5 | 4 | Thomas KINNEAR | 12 | Grantham | 2:15.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Leo BARNETT | 11 | Grantham | 2:14.23 |
| 2 | 6 | Benjamin GODDARD | 10 | Grantham | 2:13.59 |
| 3 | 7 | Barnaby DURANT | 9 | Grantham | 2:12.90 |
| 4 | 8 | Dominic KIRALY | 13 | Boston | 2:11.55 |
| 5 | 9 | Thomas HILLSON | 10 | Grantham | 2:07.90 |
| 6 | 10 | Henry DOLAN | 9 | Grantham | 2:07.07 |
| 7 | 11 | Noah STATON | 9 | March | 2:03.20 |
| 8 | 12 | Derrin BROCKLEBANK | 9 | Grantham | 2:00.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | George BAKER | 10 | March | 1:58.83 |
| 2 | 14 | Dylan HAYLOCK | 9 | March | 1:57.17 |
| 3 | 15 | Elliot GLEAVE | 10 | Grantham | 1:55.42 |
| 4 | 16 | Joshua KIM | 10 | Grantham | 1:53.80 |
| 5 | 17 | George LEONARD | 10 | Grantham | 1:53.29 |
| 6 | 18 | Ryan SMITH | 13 | Grantham | 1:50.00 |
| 7 | 19 | Alfie HAIGH | 14 | Grantham | 1:46.78 |
| 8 | 20 | Jake MCGHEE | 13 | Grantham | 1:45.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Ben CARLYLE | 13 | Grantham | 1:44.72 |
| 2 | 22 | Fabian KOLASA | 12 | Grantham | 1:43.68 |
| 3 | 23 | Jack HATCH | 13 | Gainsborough | 1:41.65 |
| 4 | 24 | Samuel BAKER | 13 | March | 1:40.59 |
| 5 | 26 | Joel SADLER | 12 | Grantham | 1:39.90 |
| 6 | 27 | Harry RICKARD | 12 | March | 1:37.48 |
| 7 | 28 | Oscar DURANT | 12 | Grantham | 1:36.90 |
| 8 | 29 | Benjamin MORRIS | 13 | Boston | 1:33.26 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Jude STATON | 14 | March | 1:28.54 |
| 2 | 34 | Connor RICKARD | 15 | March | 1:20.58 |
| 3 | 38 | Jacob FISH | 13 | Grantham | 1:17.28 |
| 4 | 40 | George BERWICK | 20 | Grantham | 1:09.05 |
| 5 | 39 | Zach HOPKINSON | 14 | Grantham | 1:13.93 |
| 6 | 36 | Daniel DEGNAN | 14 | Grantham | 1:19.01 |
| 7 | 33 | James THOMAS | 13 | Gainsborough | 1:25.16 |
| 8 | 30 | Luke DAYBELL | 13 | Grantham | 1:33.11 |