EVENT 204 Men/Women Open 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Francesca Hallam-Stott | 15 | Grantham | 18:.2.5. |
| 2 | 2 | Jessica Cater | 15 | Nova Cent'n | 18:12.10 |
| 3 | 4 | Emilia Cieszczyk | 15 | Northampton | 18:08.40 |
| 4 | 6 | Lucy Cadden | 18 | Derventio | 17:58.41 |
| 5 | 5 | Seth Hems Gillson | 12 | Repton | 18:03.74 |
| 6 | 3 | Jennifer Walker | 14 | Bassetlaw SS | 18:10.30 |
| 7 | 1 | Sophie Martin | 15 | Chesterfield | 18:12.30 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Lewis Fitch | 15 | Co Leicester | 17:53.10 |
| 2 | 10 | Hannah Hodgkiss | 16 | Repton | 17:51.91 |
| 3 | 12 | Rachel Webb | 15 | Bassetlaw SS | 17:41.40 |
| 4 | 14 | Benjamin Gibbons | 15 | Northampton | 17:12.00 |
| 5 | 13 | Jessica Brandom | 15 | Nova Cent'n | 17:22.85 |
| 6 | 11 | Alexandra Bulat | 16 | Lincoln Vulc | 17:46.58 |
| 7 | 9 | Finn Reed | 15 | Loughborough | 17:52.67 |
| 8 | 7 | Joshua Clarke | 14 | Grantham | 17:53.62 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Callum Kettlewell | 18 | Retford | 16:58.12 |
| 2 | 18 | Livia Kingsland | 17 | Nova Cent'n | 16:53.00 |
| 3 | 20 | Daniel Harris | 15 | Co Leicester | 16:47.58 |
| 4 | 22 | Alex Keeble | 18 | Leic Sharks | 16:35.13 |
| 5 | 21 | Luke Stevens | 16 | Co Leicester | 16:43.23 |
| 6 | 19 | Daniel Walker | 15 | Nova Cent'n | 16:51.80 |
| 7 | 17 | Owen Hathway | 16 | Grantham | 16:54.90 |
| 8 | 15 | Chloe Goodridge | 17 | Northampton | 17:05.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Archie Neaves | 17 | Co Leicester | 16:28.09 |
| 2 | 26 | Luke Jeal | 19 | Nova Cent'n | 16:01.31 |
| 3 | 28 | Oscar Dodds | 16 | Co Leicester | 15:57.14 |
| 4 | 30 | Joseph Kingsland | 19 | Nova Cent'n | 15:46.04 |
| 5 | 29 | Sean McCann | 17 | Co Leicester | 15:50.20 |
| 6 | 27 | Elliot Sibley | 17 | Nova Cent'n | 16:00.87 |
| 7 | 25 | James Raw | 15 | Co Leicester | 16:02.10 |
| 8 | 23 | Anya Preece | 19 | Nova Cent'n | 16:34.25 |