EVENT 118 Girls 12/13 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 1 | Katie Hautot | 06 | Cornwall | 1:13.91 |
| 2 | 3 | Olivia Kerr Muir | 06 | Gloucs | 1:12.28 |
| 3 | 5 | Amara Addison | 07 | Norfolk | 1:12.22 |
| 4 | 7 | Una Ansone | 06 | Cambs | 1:12.00 |
| 5 | 6 | Camille Gillett | 06 | Wiltshire | 1:12.19 |
| 6 | 4 | Bethan Cooke | 07 | Staffs | 1:12.26 |
| 7 | 2 | Betsy Vavasour | 06 | Dorset | 1:13.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 9 | Jamie-Leigh Tyson | 06 | Cumbria | 1:10.68 |
| 1 | 11 | Salma Terkemani | 06 | Bedfordshire | 1:09.93 |
| 2 | 13 | Millie Patterson | 06 | Swim Wales W | 1:09.03 |
| 3 | 15 | Isabel Turner | 06 | Hampshire | 1:08.59 |
| 4 | 17 | Kaia Phillips | 06 | SE Herts | 1:07.67 |
| 5 | 16 | Charlotte Harding | 06 | Warwicks | 1:08.35 |
| 6 | 14 | Lillie Grover | 07 | Worcs | 1:08.76 |
| 7 | 12 | Isabelle Steer | 06 | Sussex | 1:09.65 |
| 8 | 10 | Evie Turner | 06 | Lincolnshire | 1:10.05 |
| 9 | 8 | Aimee O'Reilly | 07 | Leics | 1:10.78 |