EVENT 101 Female 16/17 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Abby Mitchell | 17 | Leics | 1:03.82 |
| 2 | 3 | Jessica Smith | 17 | Wiltshire | 1:00.82 |
| 3 | 5 | Evangeline Belt | 17 | Cornwall | 1:00.34 |
| 4 | 7 | Elise Sophia Kendall | 17 | Northants | 58.99 |
| 5 | 6 | Jessica Medlicott | 16 | Bedfordshire | 1:00.05 |
| 6 | 4 | Sofia Chayka | 17 | SW Wales | 1:00.71 |
| 7 | 2 | Faith Dunn | 16 | Shropshire | 1:01.98 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Francesca Baber | 17 | Cambs | 58.96 |
| 1 | 11 | Anna Uren | 17 | Gloucs | 58.16 |
| 2 | 13 | Halle Harris | 16 | Dorset | 57.81 |
| 3 | 15 | Bethan Cooke | 16 | Staffs | 57.48 |
| 4 | 17 | Annabelle Quinn | 17 | Ox & N Bucks | 57.16 |
| 5 | 16 | Grace Greenhalf | 16 | Norfolk | 57.38 |
| 6 | 14 | Alexandra Bulat | 17 | Lincolnshire | 57.74 |
| 7 | 12 | Carys Roberts | 17 | Cheshire | 57.82 |
| 8 | 10 | Mariia Mishchenko | 17 | Scot North | 58.34 |
| 9 | 8 | Jamie-Leigh Tyson | 17 | Cumbria | 58.99 |