EVENT 302 Open/Male 09 /Over 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | William PENNOCK | 12 | Grantham | |
| 4 | 2 | Cyril BAO | 10 | Grantham | |
| 5 | 3 | Benjamin SHEARN | 12 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Thomas KINNEAR | 15 | Grantham | 3:11.26 |
| 2 | 5 | Freddie HIRST | 12 | Grantham | 3:02.87 |
| 3 | 6 | Henry DOLAN | 13 | Grantham | 2:57.26 |
| 4 | 7 | Jimmin BAO | 13 | Grantham | 2:55.73 |
| 5 | 8 | Joshua KIM | 14 | Grantham | 2:53.51 |
| 6 | 9 | Yu Ching (Eugene) CHEU | 15 | Grantham | 2:52.96 |
| 7 | 10 | Toby EDMONDSON | 12 | Grantham | 2:48.88 |
| 8 | 11 | George LEONARD | 14 | Grantham | 2:46.99 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Thomas HILLSON | 13 | Grantham | 2:41.09 |
| 2 | 15 | Francesco MONACO | 14 | Grantham | 2:28.85 |
| 3 | 17 | Ben CARLYLE | 16 | Grantham | 2:15.42 |
| 4 | 19 | James DOBNEY | 22 | Grantham | 2:09.65 |
| 5 | 18 | Benjamin ROBERTS | 17 | Grantham | 2:11.00 |
| 6 | 16 | Zach HOPKINSON | 17 | Grantham | 2:16.05 |
| 7 | 14 | Kieran LUCY | 16 | Grantham | 2:33.03 |
| 8 | 12 | Leo BARNETT | 14 | Grantham | 2:42.97 |