EVENT 101 Girls 16/17 Yrs 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 1 | Megan Vingoe | 02 | Cornwall | 1:02.54 |
| 2 | 3 | Isabel Wainwright | 03 | Bedfordshire | 59.90 |
| 3 | 5 | Rebecca Amor | 03 | Cumbria | 59.31 |
| 4 | 7 | Abigail Lacey | 02 | Hampshire | 58.80 |
| 5 | 6 | Hannah Buick | 03 | Staffs | 59.27 |
| 6 | 4 | Charlotte Johnson | 03 | Sussex | 59.81 |
| 7 | 2 | Emily Preedy | 03 | Wiltshire | 1:00.44 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 9 | Mackenzie Whyatt | 02 | Cambs | 58.44 |
| 1 | 11 | Ella Chown | 03 | Dorset | 58.12 |
| 2 | 13 | Bethany Eagle-Brown | 03 | Lincolnshire | 57.99 |
| 3 | 15 | Maisie Elliott | 03 | Leics | 57.47 |
| 4 | 17 | Medi Harris | 02 | Swim Wales W | 56.86 |
| 5 | 16 | Sacha Thomas | 03 | Norfolk | 57.32 |
| 6 | 14 | Jessica Woodward | 03 | SE Herts | 57.61 |
| 7 | 12 | Heather Witcombe | 02 | Gloucs | 58.01 |
| 8 | 10 | Molly Quelch | 02 | Warwicks | 58.15 |
| 9 | 8 | Olivia Fletcher | 02 | Worcs | 58.76 |