EVENT 510 Female 16 Yrs/Over 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Darcie Willis | 16 | | Eckington | 36.25 |
| 4 | 3 | Millie Cadden | 16 | | Long Eaton | 34.90 |
| 5 | 2 | Isobel Johnson | 16 | | Eckington | 35.27 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 5 | Chloe Outram | 16 | | BelperMarlin | 33.93 |
| 3 | 7 | Eleanor Broughton | 17 | | Repton | 33.10 |
| 4 | 9 | Macy Helps | 16 | | Rykneld | 32.90 |
| 5 | 8 | Kate Pearson | 17 | | Chesterfield | 33.08 |
| 6 | 6 | Isla Perry-Taylor | 16 | | BelperMarlin | 33.81 |
| 7 | 4 | Amelia Young | 17 | | Buxton | 34.36 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 11 | Mimi Fisher | 16 | | Ripley | 32.80 |
| 2 | 13 | Megan Neave | 20 | S14 | Repton | 32.35 |
| 3 | 15 | Lauren Tomlinson | 18 | | BelperMarlin | 31.67 |
| 4 | 17 | Charlotte Hall | 21 | | Etwall | 29.08 |
| 5 | 16 | Olivia Hann | 17 | | Repton | 31.00 |
| 6 | 14 | Isabel Wright | 17 | | Long Eaton | 31.75 |
| 7 | 12 | Arabella Green | 16 | | Repton | 32.40 |
| 8 | 10 | Lucy Cadden | 19 | | Derby Excel | 32.82 |