EVENT 126 Girls 14/15 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Mya Watt | 15 | Derbyshire | 1:07.08 |
| 1 | 4 | Sadie Lucas | 15 | Berks&SBucks | 1:06.69 |
| 2 | 6 | Charlotte Norman | 14 | Suffolk | 1:06.35 |
| 3 | 8 | Mikayla McCall | 15 | Surrey | 1:04.98 |
| 4 | 10 | Holly McGill | 14 | Scot East | 1:04.66 |
| 5 | 9 | Gemma Peters | 15 | Somerset | 1:04.98 |
| 6 | 7 | Cerys Rosser | 14 | Swim Wales E | 1:05.34 |
| 7 | 5 | Martha Hurst | 15 | Cheshire | 1:06.68 |
| 8 | 3 | Abigail Febrey | 14 | Shropshire | 1:06.77 |
| 9 | 1 | Chloe Goodridge | 14 | Northants | 1:07.45 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Freya Colbert | 15 | Notts | 1:04.43 |
| 1 | 14 | Chiara Tommasello | 15 | Lancashire | 1:03.47 |
| 2 | 16 | Mollie Garratt | 15 | Yorkshire | 1:03.10 |
| 3 | 18 | Bella Hodges | 15 | Devon | 1:02.66 |
| 4 | 20 | Leah Whittaker | 14 | Middlesex | 1:01.24 |
| 5 | 19 | Tamryn Van Selm | 15 | Kent | 1:02.64 |
| 6 | 17 | Katie Shanahan | 15 | Scot West | 1:02.92 |
| 7 | 15 | Emily Iley | 15 | Essex | 1:03.18 |
| 8 | 13 | Lottie James | 15 | Ox & N Bucks | 1:04.12 |
| 9 | 11 | Madison Peveller | 14 | N & Durham | 1:04.50 |