EVENT 122 Girls 16/17 Yrs 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Aimee Masters | 17 | Wiltshire | 1:23.38 |
| 2 | 3 | Mackenzi Ashford | 17 | Dorset | 1:16.77 |
| 3 | 5 | Daisy Mixer | 16 | Norfolk | 1:15.75 |
| 4 | 7 | Sophie Moore | 17 | Sussex | 1:15.17 |
| 5 | 6 | Phoebe Nethercott | 17 | Gloucs | 1:15.54 |
| 6 | 4 | Izabel Peniket | 17 | Staffs | 1:16.28 |
| 7 | 2 | Imola Jozsa | 16 | Bedfordshire | 1:18.88 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Kate Mugleston | 16 | Cornwall | 1:14.71 |
| 1 | 11 | Rosie Richards | 16 | Hampshire | 1:14.08 |
| 2 | 13 | Sophie Weston | 16 | Cheshire | 1:13.95 |
| 3 | 15 | Katie Founds | 16 | Lincolnshire | 1:13.40 |
| 4 | 17 | Hannah Bowley | 17 | Derbyshire | 1:12.31 |
| 5 | 16 | Summer York | 16 | Northants | 1:12.35 |
| 6 | 14 | Louise Jones | 17 | Shropshire | 1:13.69 |
| 7 | 12 | Lauren Gore | 16 | SE Herts | 1:13.98 |
| 8 | 10 | Morgan Brand | 16 | Warwicks | 1:14.22 |
| 9 | 8 | Alexa Atkinson | 17 | Cumbria | 1:15.03 |