EVENT 507 Female 10 /Over 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Leila Marandi | 11 | Bassetlaw SS | 3:23.08 |
| 2 | 4 | Sophie Rees | 10 | Northampton | 3:10.70 |
| 3 | 6 | Vida Coulson | 12 | Northampton | 3:04.90 |
| 4 | 8 | Katherine Fletcher | 12 | Co Leicester | 3:02.95 |
| 5 | 7 | Milly Webb | 11 | Northampton | 3:03.60 |
| 6 | 5 | Esmay Michael | 12 | Co Leicester | 3:08.13 |
| 7 | 3 | Olivia Fern | 11 | Northampton | 3:12.98 |
| 8 | 1 | Hollie Willars | 12 | Co Leicester | 3:26.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Morgan Hope | 13 | Bassetlaw SS | 2:50.15 |
| 2 | 12 | Maddie Walden | 15 | Northampton | 2:48.72 |
| 3 | 14 | Hollie Cowles | 14 | Braunstone | 2:47.08 |
| 4 | 16 | Willow Wright | 12 | Co Leeds | 2:42.20 |
| 5 | 15 | Sophie Kelly | 14 | Flitwick | 2:44.87 |
| 6 | 13 | Jessica Purser | 14 | Braunstone | 2:48.56 |
| 7 | 11 | Shivani Sharma | 12 | Co Leicester | 2:49.40 |
| 8 | 9 | Elsie Baldwin | 12 | Co Leicester | 3:01.68 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Daisy Tatlow-Turner | 15 | Chesterfield | 2:36.60 |
| 2 | 20 | Darcie Platts | 17 | Co Leicester | 2:21.38 |
| 3 | 22 | Lucy Turner | 20 | Lboro Uni | 2:16.84 |
| 4 | 24 | Betsy Wizard | 22 | Northampton | 2:08.41 |
| 5 | 23 | Frouke Ludwig | 17 | Lboro Uni | 2:16.20 |
| 6 | 21 | Francesca Harrison | 16 | Co Leicester | 2:17.70 |
| 7 | 19 | Chloe Gent | 15 | Co Leicester | 2:26.60 |
| 8 | 17 | Sofia Reedha | 14 | Co Leicester | 2:38.40 |