EVENT 201 Boy 07 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | JACK REYNOLDS | 11 | Grantham | 1:33.46 |
| 3 | 2 | OSCAR DURANT | 10 | Grantham | 1:42.02 |
| 4 | 3 | VINCENT CLARE | 12 | Deepings | DQ:SA. |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | CORMAC STANLEY | 16 | Grantham | DN:C . |
| 2 | 5 | FABIAN KOLASA | 10 | Grantham | 1:55.57 |
| 3 | 6 | JOEL SADLER | 10 | Grantham | DN:C . |
| 4 | 7 | LUCA HALLAM | 9 | Grantham | 1:59.37 |
| 5 | 8 | JAMES TOWNSIN | 12 | Deepings | 1:49.85 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | LUKE DAYBELL | 12 | Grantham | 1:34.25 |
| 2 | 10 | WILLIAM BURDOCK | 12 | Deepings | DQ:SA. |
| 3 | 11 | JACK BELL | 12 | Deepings | 1:32.07 |
| 4 | 12 | ADRIAN ELERTS | 11 | Grantham | 1:35.56 |
| 5 | 13 | ZACH HOPKINSON | 12 | Grantham | 1:21.60 |
| 6 | 14 | WILLIAM GRAY | 13 | Grantham | 1:19.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | JAKE BATY | 16 | Grantham | 1:17.99 |
| 2 | 16 | DANIEL DEGNAN | 13 | Grantham | 1:16.51 |
| 3 | 17 | JAMES NICHOLS | 12 | Grantham | 1:17.00 |
| 4 | 18 | GEORGE SHAW | 24 | Deepings | 1:15.47 |
| 5 | 19 | JACOB FISH | 12 | Grantham | 1:12.24 |
| 6 | 20 | JACOB BRIERS | 13 | Deepings | 1:10.61 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | OWEN HATHWAY | 15 | Grantham | 1:06.93 |
| 2 | 24 | CADE DEAVES | 16 | Grantham | 1:09.77 |
| 3 | 26 | JAMES DOBNEY | 17 | Grantham | 1:02.38 |
| 4 | 25 | HARRY CARDELL | 17 | Deepings | 1:04.03 |
| 5 | 23 | GEORGE BERWICK | 18 | Grantham | 1:07.31 |
| 6 | 21 | JOSHUA CLARKE | 13 | Grantham | 1:12.07 |