EVENT 111 Female 14/15 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Mia Taylor | 15 | Cornwall | 1:21.18 |
| 2 | 3 | Nya Wilkinson | 14 | Northants | 1:20.28 |
| 3 | 5 | Anastasia Enoch | 15 | Scot North | 1:18.44 |
| 4 | 7 | Anneliese Elford | 14 | Ox & N Bucks | 1:16.76 |
| 5 | 6 | Sophie King | 14 | Wiltshire | 1:17.56 |
| 6 | 4 | Amelia Porzio | 15 | Bedfordshire | 1:20.26 |
| 7 | 2 | Daisy Frost | 15 | Shropshire | 1:21.08 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Isabel Owen | 14 | Staffs | 1:15.74 |
| 1 | 11 | Olivia Anstey | 15 | Lincolnshire | 1:14.41 |
| 2 | 13 | Gabriella Hunt | 15 | Cheshire | 1:13.93 |
| 3 | 15 | Amber Rigg | 15 | Cumbria | 1:13.72 |
| 4 | 17 | Mabli Collyer | 15 | SW Wales | 1:09.80 |
| 5 | 16 | Amelie Spicer | 15 | Gloucs | 1:11.94 |
| 6 | 14 | Niamh Dunbar | 15 | Leics | 1:13.83 |
| 7 | 12 | Ellie Smith | 15 | Norfolk | 1:14.21 |
| 8 | 10 | Yan Ting Emily Pak | 14 | Cambs | 1:14.42 |
| 9 | 8 | Sadie Robinson | 14 | Dorset | 1:16.21 |