EVENT 103 Boys 09 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Leo BARNETT | 10 | Grantham | 2:30.00 |
| 2 | 2 | George LEONARD | 10 | Grantham | 2:30.00 |
| 3 | 3 | Barnaby DURANT | 9 | Grantham | 2:00.00 |
| 4 | 4 | Oliver WATSON | 15 | Boston | 1:55.66 |
| 5 | 5 | Stanley THURLOW | 10 | Lincoln Vulc | 1:49.18 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Joel SADLER | 11 | Grantham | 1:48.77 |
| 2 | 7 | Luca HALLAM | 10 | Grantham | 1:47.07 |
| 3 | 8 | Fabian KOLASA | 11 | Grantham | 1:44.49 |
| 4 | 9 | Samuel NICHOLS | 10 | Grantham | 1:38.52 |
| 5 | 11 | Adrian ELERTS | 12 | Grantham | 1:31.91 |
| 6 | 12 | Riley-Lee BURFORD | 14 | Boston | 1:23.24 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Ryan NORTON | 15 | Boston | 1:08.00 |
| 2 | 18 | Owen HATHWAY | 16 | Grantham | 1:05.41 |
| 3 | 20 | Isaac BANHAM | 17 | Skegness | 1:03.73 |
| 4 | 19 | Finnley DANBY | 16 | Boston | 1:04.66 |
| 5 | 16 | George BERWICK | 19 | Grantham | 1:06.70 |
| 6 | 13 | Jake BATY | 16 | Grantham | 1:17.99 |