EVENT 107 Girls 16/17 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Zara Leleux | 16 | Shropshire | 1:10.77 |
| 2 | 3 | Elizabeth Arnold | 16 | Swim Wales W | 1:07.88 |
| 3 | 5 | Eleanor King | 17 | Bedfordshire | 1:06.98 |
| 4 | 7 | Niamh James | 16 | Herts | 1:06.50 |
| 5 | 6 | Amy Weston | 16 | Worcs | 1:06.60 |
| 6 | 4 | Jasmine Stone | 16 | Gloucs | 1:07.67 |
| 7 | 2 | Tilly Anema | 16 | Norfolk | 1:08.30 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 9 | Denice Gardo | 16 | Wiltshire | 1:05.95 |
| 1 | 11 | Eleanor Phesse | 16 | Cornwall | 1:05.34 |
| 2 | 13 | Nicola Capstick | 16 | Cumbria | 1:04.73 |
| 3 | 15 | Lauren Cox | 16 | Warwicks | 1:03.18 |
| 4 | 17 | Rachel Wellings | 17 | Cambs | 1:00.87 |
| 5 | 16 | Emilia Sansome | 16 | Berks&SBucks | 1:01.03 |
| 6 | 14 | Sophie Hart | 16 | Lincolnshire | 1:04.72 |
| 7 | 12 | Phoebe Downes | 17 | Northants | 1:04.80 |
| 8 | 10 | Jessica Banks | 17 | Staffs | 1:05.35 |
| 9 | 8 | Kate Dissington | 17 | Derbyshire | 1:06.38 |