EVENT 118 Girls 12/13 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 2 | Alex Potts | 00 | Derbyshire | 1:11.64 |
| 1 | 4 | Megan Niven | 00 | Scot West | 1:10.49 |
| 2 | 6 | Michelle Hepworth | 00 | Sussex | 1:09.33 |
| 3 | 8 | Lexie Waller | 01 | Scot East | 1:08.40 |
| 4 | 10 | Madeleine Crompton | 00 | Cheshire | 1:08.03 |
| 5 | 9 | Aimee Richards | 00 | Notts | 1:08.20 |
| 6 | 7 | Eleanor Mitchell | 00 | Herts | 1:09.33 |
| 7 | 5 | Lois Masters | 00 | Swim Wales E | 1:10.23 |
| 8 | 3 | Carissa Armijo | 00 | N & Durham | 1:10.62 |
| 9 | 1 | Emily Arnold | 00 | Swim Wales W | 1:13.50 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 12 | Sophie Hobbah | 01 | Yorkshire | 1:07.40 |
| 1 | 14 | Imogen McCalman | 00 | Berks&SBucks | 1:07.01 |
| 2 | 16 | Amelia Chappell | 00 | Somerset | 1:06.44 |
| 3 | 18 | Tamara-Elise Elliott | 00 | Kent | 1:05.40 |
| 4 | 20 | Harriet Aldous-Fountai | 01 | Worcs | 1:04.50 |
| 5 | 19 | Anna Maine | 00 | Surrey | 1:05.00 |
| 6 | 17 | Lucy Farmer | 00 | Ox & N Bucks | 1:06.43 |
| 7 | 15 | Loulou Vos | 99 | Middlesex | 1:06.97 |
| 8 | 13 | Katie Byrne | 99 | Hampshire | 1:07.38 |
| 9 | 11 | Charlotte Yates | 00 | Lancashire | 1:07.75 |