EVENT 105 Girls 14/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Lottie Jackson | 14 | Surrey | 1:06.49 |
| 1 | 4 | Natalie Jones | 15 | Scot East | 1:05.20 |
| 2 | 6 | Amber Downham | 14 | Derbyshire | 1:05.00 |
| 3 | 8 | Jo Hobsley | 15 | Middlesex | 1:04.51 |
| 4 | 10 | Amelia Robertson | 15 | N & Durham | 1:04.19 |
| 5 | 9 | Evie McLean | 15 | Ox & N Bucks | 1:04.32 |
| 6 | 7 | Olivia Lee | 15 | Berks&SBucks | 1:04.53 |
| 7 | 5 | Kate Morris | 14 | Notts | 1:05.00 |
| 8 | 3 | Leah Evans | 14 | Somerset | 1:05.75 |
| 9 | 1 | Kathryn Wilson | 15 | Northants | 1:08.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | May Bradburn | 15 | Essex | 1:04.03 |
| 1 | 14 | Olivia Herron | 15 | Lancashire | 1:03.48 |
| 2 | 16 | Annabelle Wilkinson | 14 | Yorkshire | 1:03.10 |
| 3 | 18 | Rebecca De Torres | 15 | Swim Wales E | 1:00.84 |
| 4 | 20 | Sophie Freeman | 15 | Devon | 59.01 |
| 5 | 19 | Lucy Grieve | 15 | Scot West | 59.57 |
| 6 | 17 | Natalie Sanford | 15 | Suffolk | 1:02.94 |
| 7 | 15 | Tamryn Van Selm | 15 | Kent | 1:03.39 |
| 8 | 13 | Henrietta D\'Ammassa | 14 | Shropshire | 1:03.75 |
| 9 | 11 | Eliza Pinkstone | 14 | Cheshire | 1:04.18 |