EVENT 204 Female 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 27 | Chloe MUMBY | 13 | Cleethorpes | 3::3.1. |
| 2 | 2 | Anissia Ioana TILEA | 10 | Co Sheffield | 4:06.66 |
| 3 | 4 | Enya-Rae AINSLIE | 10 | Co Sheffield | 4:00.12 |
| 4 | 6 | Anna GLOSEK | 12 | Co Leeds | 3:59.99 |
| 5 | 5 | Gracie HART | 9 | Co Leeds | 4:00.00 |
| 6 | 3 | Matilda PENNELLS | 9 | Co Leeds | 4:05.59 |
| 7 | 1 | Ferne DYSON | 10 | Co Leeds | 4:10.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 8 | Ayla CARRY | 11 | Co Leeds | 3:45.00 |
| 1 | 10 | Sophia LANGE | 10 | Co Leeds | 3:33.95 |
| 2 | 12 | Oriana ODLIN | 14 | Cleethorpes | 3:16.90 |
| 3 | 14 | Madeleine FLAHERTY | 11 | Co Leeds | 3:13.20 |
| 4 | 16 | Amelia MATSON | 12 | Co Leeds | 3:10.79 |
| 5 | 15 | Evie-Rose TOPPING | 13 | Co Leeds | 3:12.00 |
| 6 | 13 | Chloe SIMPSON | 12 | Co Sheffield | 3:15.00 |
| 7 | 11 | Isabelle LOK | 10 | Co Leeds | 3:27.86 |
| 8 | 9 | Isobel HARRISON | 10 | Co Sheffield | 3:40.00 |
| 9 | 7 | Rachel RICHARDSON | 11 | Co Sheffield | 3:50.98 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 18 | Freya ELLIS | 12 | Co Leeds | 3:00.17 |
| 1 | 20 | Annabel GALBRAITH | 14 | Co Leeds | 2:56.20 |
| 2 | 22 | Rosie GRAYSON | 12 | Wear Valley | 2:51.80 |
| 3 | 24 | Amelie PEARCE | 15 | Cleethorpes | 2:39.09 |
| 4 | 26 | Esme HAYS | 16 | Bo Barnsley | 2:35.10 |
| 5 | 25 | Molly HUGHES | 14 | Co Sheffield | 2:36.90 |
| 6 | 23 | Jessica ROLLINGS | 13 | Co Leeds | 2:40.63 |
| 7 | 21 | Ella JORDAN | 14 | Co Leeds | 2:53.16 |
| 8 | 19 | Rosie HAIGH | 12 | Co Sheffield | 2:56.90 |
| 9 | 17 | Lola COPELAND | 15 | Wear Valley | 3:03.50 |