EVENT 113 Girls 16/17 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Eleanor King | 17 | Bedfordshire | 1:10.20 |
| 2 | 3 | Charlotte Hall | 16 | Worcs | 1:07.90 |
| 3 | 5 | Cameron Minifie | 17 | Shropshire | 1:06.70 |
| 4 | 7 | Sara Mazzeo | 17 | Cornwall | 1:06.25 |
| 5 | 6 | Jessica Banks | 17 | Staffs | 1:06.46 |
| 6 | 4 | Bryony Pack | 16 | Norfolk | 1:07.10 |
| 7 | 2 | Lauren Cooley | 16 | Cumbria | 1:08.16 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 9 | Keria Noon | 17 | Gloucs | 1:05.89 |
| 1 | 11 | Sophie Lawrence | 17 | Berks&SBucks | 1:03.80 |
| 2 | 13 | Eve Goddard-Smith | 16 | Swim Wales W | 1:03.18 |
| 3 | 15 | Summer Kennedy | 16 | Derbyshire | 1:03.00 |
| 4 | 17 | Isabel Spinley | 17 | Lincolnshire | 58.90 |
| 5 | 16 | Caitlin Hubbard | 16 | Warwicks | 1:01.82 |
| 6 | 14 | Shannon Stott | 17 | Herts | 1:03.01 |
| 7 | 12 | Poppy Richardson | 16 | Cambs | 1:03.41 |
| 8 | 10 | Olivia Tatton | 17 | Northants | 1:05.70 |
| 9 | 8 | Laura McNab | 16 | Wiltshire | 1:06.01 |