EVENT 308 Womens Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Sophie Weston | 13 | Warrington W | 5:20.30 |
| 2 | 4 | Katie Rawnsley | 14 | Prescot | 5:18.20 |
| 3 | 6 | Lucy Turner | 14 | Burnley BOBC | 5:15.71 |
| 4 | 8 | Lucy Dixon | 14 | Co Salford | 5:12.19 |
| 5 | 7 | Olivia Sheehan | 14 | Wigan BEST | 5:13.78 |
| 6 | 5 | Eleanor Kay | 13 | Bolton Metro | 5:17.10 |
| 7 | 3 | Eve Pendlebury | 13 | Co Salford | 5:19.98 |
| 8 | 1 | Charlotte Howman | 15 | Co Manch Aq | 5:20.52 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 10 | Jess Prokas | 14 | Cockermouth | 5:11.46 |
| 2 | 12 | Ella Blocksidge | 13 | Co Salford | 5:06.20 |
| 3 | 14 | Rachel Hornby | 15 | Wigan BEST | 5:00.03 |
| 4 | 16 | Olivia Clare | 16 | Co Manch Aq | 4:49.79 |
| 5 | 15 | Erin Hoyland | 16 | Co Manch Aq | 4:57.78 |
| 6 | 13 | Jennifer Green | 16 | Wigan BEST | 5:00.99 |
| 7 | 11 | Lois Keyes | 15 | Co Liverpool | 5:10.07 |
| 8 | 9 | Lauren Bradley-Holt | 15 | Co Salford | 5:12.01 |