EVENT 408 Boys 200m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | William PENNOCK | 9 | Grantham | |
| 4 | 4 | Toby EDMONDSON | 9 | Grantham | |
| 5 | 5 | Austin CHEN-REES | 10 | Grantham | |
| 6 | 6 | Alex NEVARD | 11 | Grantham | 4:40.21 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Thomas KINNEAR | 13 | Grantham | 4:00.30 |
| 2 | 8 | Woody CLARK | 9 | Grantham | 3:59.24 |
| 3 | 9 | Derrin BROCKLEBANK | 9 | Grantham | 3:58.40 |
| 4 | 11 | Barnaby DURANT | 10 | Grantham | 3:38.16 |
| 5 | 12 | George LEONARD | 11 | Grantham | 3:30.49 |
| 6 | 13 | Yu Ching CHEUNG | 12 | Grantham | 3:28.36 |
| 7 | 14 | Henry DOLAN | 10 | Grantham | 3:24.52 |
| 8 | 15 | Leo BARNETT | 11 | Grantham | 3:18.42 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Thomas HILLSON | 10 | Grantham | 3:18.26 |
| 2 | 17 | Oscar CHEN REES | 11 | Grantham | 3:16.01 |
| 3 | 18 | Elliot GLEAVE | 10 | Grantham | 3:14.30 |
| 4 | 19 | Joshua KIM | 11 | Grantham | 3:07.71 |
| 5 | 20 | Joel SADLER | 12 | Grantham | 3:01.80 |
| 6 | 21 | Samuel NICHOLS | 11 | Grantham | 2:54.01 |
| 7 | 22 | Ben CARLYLE | 13 | Grantham | 2:53.68 |
| 8 | 23 | A BREARLEY-NEWSOME | 12 | Grantham | 2:48.36 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Oscar DURANT | 12 | Grantham | 2:46.24 |
| 2 | 28 | Daniel DEGNAN | 15 | Grantham | 2:15.64 |
| 3 | 30 | Zach HOPKINSON | 14 | Grantham | 2:10.27 |
| 4 | 32 | Owen HATHWAY | 17 | Grantham | 2:03.70 |
| 5 | 31 | Joshua CLARKE | 15 | Grantham | 2:05.96 |
| 6 | 29 | Jacob FISH | 14 | Grantham | 2:13.67 |
| 7 | 26 | James NICHOLS | 14 | Grantham | 2:30.44 |
| 8 | 24 | Fabian KOLASA | 12 | Grantham | 2:48.07 |