EVENT 106 Mixed 12 Yrs/Under 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Elise HEMMINGS | 11 | Lincoln Vulc | 3:57.11 |
| 1 | 4 | Fraser GALBRAITH | 10 | Co Leeds | 3:48.08 |
| 2 | 6 | Samuel FORD | 10 | Co Leeds | 3:40.00 |
| 3 | 8 | Isabelle LOK | 10 | Co Leeds | 3:34.50 |
| 4 | 10 | Madeleine FLAHERTY | 10 | Co Leeds | 3:23.80 |
| 5 | 9 | Ted WINGFIELD | 10 | Co Leeds | 3:32.20 |
| 6 | 7 | Sophia LANGE | 10 | Co Leeds | 3:37.10 |
| 7 | 5 | Verity LILLEY | 12 | Co Leeds | 3:47.60 |
| 8 | 3 | Katie SADLER | 10 | Co Leeds | 3:52.70 |
| 9 | 1 | Matilda SHERLEY-PRICE | 9 | Co Leeds | 4:00.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Evelyn ATKINSON | 10 | Co Leeds | 3:20.10 |
| 1 | 14 | Annabel HILTON | 12 | Co Leeds | 3:17.50 |
| 2 | 16 | Betsy KIRKLEY | 11 | Co Leeds | 3:07.30 |
| 3 | 18 | Zoe FEATHER | 11 | Co Leeds | 3:03.90 |
| 4 | 20 | Neve STAFFORD | 11 | Co Leeds | 3:03.10 |
| 5 | 19 | Willow WRIGHT | 11 | Co Leeds | 3:03.32 |
| 6 | 17 | Livia STACEY | 12 | Co Leeds | 3:04.01 |
| 7 | 15 | Amelia MATSON | 12 | Co Leeds | 3:09.20 |
| 8 | 13 | Olivia BYRNE | 12 | Bo Barnsley | 3:17.80 |
| 9 | 11 | Isabelle PARK | 10 | Co Leeds | 3:22.09 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 22 | Olaf GRUDOWSKI | 12 | Co Leeds | 3:01.20 |
| 1 | 24 | Freya ELLIS | 12 | Co Leeds | 2:58.40 |
| 2 | 26 | Evie THORPE | 12 | Co Leeds | 2:53.90 |
| 3 | 28 | Eva SYLVESTER | 12 | Co Leeds | 2:50.40 |
| 4 | 30 | Oscar HUSSEY | 12 | Co Leeds | 2:38.00 |
| 5 | 29 | Emily TALKES | 12 | Lincoln Vulc | 2:45.12 |
| 6 | 27 | James HUCKLE | 12 | Lincoln Vulc | 2:51.77 |
| 7 | 25 | Oliver BARKER | 11 | Co Leeds | 2:55.20 |
| 8 | 23 | Evie COOK | 11 | Co Leeds | 3:00.50 |
| 9 | 21 | Harrison WAKE | 12 | Co Leeds | 3:01.90 |