EVENT 113 Girls 16/17 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Katie Henderson | 17 | Notts | 1:07.30 |
| 1 | 4 | Katie Taylor | 17 | Scot East | 1:04.74 |
| 2 | 6 | Elinor Duley | 17 | Essex | 1:04.12 |
| 3 | 8 | Sam Flack | 17 | Hampshire | 1:03.84 |
| 4 | 10 | Tori Sopp | 17 | Cheshire | 1:02.76 |
| 5 | 9 | Kirstin Lawrie | 16 | Scot West | 1:03.30 |
| 6 | 7 | Tegan Drew | 17 | Devon | 1:04.00 |
| 7 | 5 | Lucy Farmer | 17 | Ox & N Bucks | 1:04.20 |
| 8 | 3 | India Burch | 17 | Swim Wales E | 1:04.93 |
| 9 | 1 | Ellie-Mae Smith | 16 | Suffolk | 1:09.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | MILLY SCOTCHBROOK | 17 | Leics | 1:02.40 |
| 1 | 14 | Abby Jackson | 16 | Sussex | 1:01.90 |
| 2 | 16 | Spencer Williams | 17 | Middlesex | 1:01.70 |
| 3 | 18 | Jasmine McCrea | 16 | Dorset | 1:00.10 |
| 4 | 20 | Emily Large | 16 | N & Durham | 57.80 |
| 5 | 19 | ALICIA WILSON | 17 | Surrey | 59.70 |
| 6 | 17 | Isabel Jones | 17 | Somerset | 1:01.10 |
| 7 | 15 | Amy Bell | 17 | Yorkshire | 1:01.80 |
| 8 | 13 | Daisy Anderson | 16 | Kent | 1:02.20 |
| 9 | 11 | Emily Keays | 17 | Lancashire | 1:02.70 |