| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Yasmin DOS SANTOS | 18 | Co Milton K | : . |
| 1 | 2 | Caitlin MACKAY | 16 | Wycombe Dist | : . |
| 2 | 3 | Kate MILLS | 19 | Co Oxford | : . |
| 3 | 4 | Ciara STANDING | 18 | Stockport Mo | : . |
| 4 | 5 | Molly ROBINSON | 17 | Guildford Ct | : . |
| 5 | 6 | Isabel JONES | 17 | Millfield | : . |
| 6 | 7 | Laura STEPHENS | 18 | Plymouth Lea | : . |
| 7 | 8 | Harriet JONES | 20 | Co Cardiff | : . |
| 8 | 9 | Emily DOWDING | 19 | teamipswich | : . |
| 9 | 10 | Sophie YENDELL | 15 | Co Derby | : . |