EVENT 113 Female 16/17 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Jessica Medlicott | 16 | Bedfordshire | 1:09.22 |
| 2 | 3 | Amy Willetts | 16 | Leics | 1:09.14 |
| 3 | 5 | Jamie-Leigh Tyson | 17 | Cumbria | 1:07.58 |
| 4 | 7 | Evangeline Belt | 17 | Cornwall | 1:06.59 |
| 5 | 6 | Jessica Smith | 17 | Wiltshire | 1:07.02 |
| 6 | 4 | Harriet Casey | 17 | Northants | 1:07.82 |
| 7 | 2 | Alison Wood | 16 | Scot North | 1:09.15 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Lowri Lewis | 17 | SW Wales | 1:06.04 |
| 1 | 11 | Millie Wells | 16 | Shropshire | 1:04.50 |
| 2 | 13 | Sophie Traill | 16 | Cheshire | 1:04.12 |
| 3 | 15 | Eve Tinsley | 17 | Staffs | 1:02.87 |
| 4 | 17 | Charlotte Smith | 16 | Norfolk | 1:02.09 |
| 5 | 16 | Georgia Holgate | 16 | Cambs | 1:02.38 |
| 6 | 14 | Martha Sell | 17 | Gloucs | 1:03.87 |
| 7 | 12 | Olivia Newman-Baronius | 17 | Ox & N Bucks | 1:04.20 |
| 8 | 10 | Tilly McHugh | 17 | Dorset | 1:05.20 |
| 9 | 8 | Alexandra Bulat | 17 | Lincolnshire | 1:06.49 |