EVENT 118 Female 12/13 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Maddie Taylor | 13 | Northants | 1:17.99 |
| 2 | 3 | Isla Jago | 13 | Gloucs | 1:13.98 |
| 3 | 5 | Esme Langley | 13 | Norfolk | 1:13.32 |
| 4 | 7 | Paige Welton | 13 | Staffs | 1:12.73 |
| 5 | 6 | Emma Cushion | 13 | Cambs | 1:13.22 |
| 6 | 4 | Betina Puszkarska | 13 | Wiltshire | 1:13.40 |
| 7 | 2 | Isobel Marsh | 13 | Cumbria | 1:15.81 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Emilie Webb | 13 | Lincolnshire | 1:12.61 |
| 1 | 11 | Holly Katasi | 13 | Ox & N Bucks | 1:10.91 |
| 2 | 13 | Madison Christoforos | 13 | Scot North | 1:10.75 |
| 3 | 15 | Robyn Fitzhenry | 13 | Cornwall | 1:09.55 |
| 4 | 17 | Grace Nichols | 13 | SW Wales | 1:06.27 |
| 5 | 16 | Emily Hall | 13 | Cheshire | 1:07.86 |
| 6 | 14 | Macie Cailes | 13 | Dorset | 1:10.47 |
| 7 | 12 | Maisie Simpson-Dawson | 13 | Leics | 1:10.86 |
| 8 | 10 | Abigail Davis | 13 | Bedfordshire | 1:12.14 |
| 9 | 8 | Martha Gibbard | 13 | Shropshire | 1:12.68 |