EVENT 3 Female 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Amelia VINCENT | 14 | West Dorset | 2:12.30 |
| 2 | 3 | Pippa WATTS | 13 | Blandford | 2:05.55 |
| 3 | 5 | Seraphina HANCOCK | 13 | Bridport Bar | 1:58.67 |
| 4 | 4 | Millie SAUPE | 14 | Bourmth Coll | 2:01.14 |
| 5 | 2 | Isla Rose PAUL | 13 | Weymouth | 2:06.79 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 7 | Millie HENNESSY | 13 | Poole | 1:48.72 |
| 2 | 9 | Rosa CONSTANT | 13 | West Dorset | 1:45.81 |
| 3 | 11 | Elsie TURNER | 14 | Weymouth | 1:43.43 |
| 4 | 10 | Isabelle TAYLOR | 14 | Poole | 1:43.54 |
| 5 | 8 | Daisy WIGGINS | 13 | S Bournem'th | 1:48.66 |
| 6 | 6 | Annabelle PROWSE | 13 | West Dorset | 1:53.89 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 13 | Chloe DAVIS | 13 | Poole | 1:43.14 |
| 2 | 15 | Elizabeth WILTSHIRE | 12 | West Dorset | 1:40.93 |
| 3 | 17 | Evie WILLIAMS | 12 | S Bournem'th | 1:40.22 |
| 4 | 16 | Ocean TILLYARD | 12 | Wareham | 1:40.39 |
| 5 | 14 | Evie TAYLOR | 14 | Poole | 1:42.11 |
| 6 | 12 | Lily KENDRICK | 15 | S Bournem'th | 1:43.17 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 19 | Sasha WOOD | 15 | Seagulls SC | 1:38.60 |
| 2 | 21 | Olivia LANSLEY | 14 | S Bournem'th | 1:38.15 |
| 3 | 23 | Jessica HOFFMANN | 13 | West Dorset | 1:37.88 |
| 4 | 22 | Sasha-Mae BARTLETT | 13 | West Dorset | 1:38.14 |
| 5 | 20 | Alexis HAMILL | 13 | S Bournem'th | 1:38.36 |
| 6 | 18 | Tilly HOMDEN | 13 | Poole | 1:38.87 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 25 | Clementine MIKLAU | 12 | S Bournem'th | 1:36.29 |
| 2 | 27 | Emily VINCENT | 12 | S Bournem'th | 1:30.55 |
| 3 | 29 | Brooke KIRLEW | 12 | Weymouth | 1:26.13 |
| 4 | 28 | Sofia HOWLETT | 12 | West Dorset | 1:29.93 |
| 5 | 26 | Molly VINTINER | 12 | West Dorset | 1:35.94 |
| 6 | 24 | Charlotte WOODWARD | 13 | Bourmth Coll | 1:37.74 |