EVENT 1 Men/Women Open 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Eleanor Trahearn | 13 | Co Leicester | 21:05.80 |
| 2 | 2 | Amy Stratton | 17 | Boston | 20:25.30 |
| 3 | 3 | Harry Fleet | 16 | Co Leicester | 20:01.50 |
| 4 | 4 | Thomas Macmanard | 15 | Loughborough | 19:55.80 |
| 5 | 5 | Sophie Millidge | 16 | Swadlincote | 19:51.50 |
| 6 | 6 | William Lacey | 14 | Co Leicester | 19:42.60 |
| 7 | 7 | Janie Finch | 12 | Co Leicester | 19:41.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Elizabeth Palfrey | 14 | Loughborough | 19:38.00 |
| 2 | 9 | Francesca Palfrey | 16 | Loughborough | 19:37.00 |
| 3 | 10 | Zara Dixon | 14 | Lincoln Vulc | 19:19.80 |
| 4 | 11 | Ruby Credland | 15 | Bassetlaw SS | 19:18.90 |
| 5 | 12 | Jasper Ley-Sneyd | 16 | Loughborough | 19:13.50 |
| 6 | 13 | Ryan Norton | 15 | Boston | 19:02.60 |
| 7 | 14 | Jennifer Walker | 14 | Bassetlaw SS | 18:49.62 |
| 8 | 15 | Francesca Hallam-Stott | 15 | Grantham | 18:44.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Poppy Mathias | 16 | Repton Swim | 18:39.27 |
| 2 | 19 | Finn Reed | 15 | Loughborough | 18:11.70 |
| 3 | 21 | Owen Hathway | 16 | Grantham | 17:36.40 |
| 4 | 23 | Kallum Quirke | 16 | NottmLeander | 17:20.50 |
| 5 | 22 | Daniel Walker | 15 | Arnold | 17:22.44 |
| 6 | 20 | Alexandra Bulat | 16 | Lincoln Vulc | 18:05.70 |
| 7 | 18 | Poppy Mead | 17 | Derventio | 18:18.80 |
| 8 | 16 | Shae Stewart | 16 | Bramcote | 18:40.80 |