EVENT 408 Open/Male 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 2 | Matthew Sawers | 15 | | Wigan BEST | 4:18.37 |
| 3 | 4 | Oliver Lambert | 15 | | Co Liverpool | 4:15.26 |
| 4 | 6 | Aidan Kearney | 16 | | Co Liverpool | 4:09.10 |
| 5 | 5 | Benjamin Ross | 16 | | Co Salford | 4:09.80 |
| 6 | 3 | Patrick Harriman | 15 | | Satellite | 4:15.62 |
| 7 | 1 | George Longley | 15 | S6 | Carnforth | 7:30.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 8 | George Daintith | 16 | | Co Liverpool | 4:05.20 |
| 2 | 10 | Dylan Madican | 15 | | Co Liverpool | 4:04.00 |
| 3 | 12 | Donatas Dragasius | 20 | | Co Manch Aq | 4:00.80 |
| 4 | 14 | Daniel Khodaverdi | 15 | | Stockport Mo | 3:57.00 |
| 5 | 13 | Joshua Keogh | 16 | | Bolton Metro | 3:58.80 |
| 6 | 11 | Max Harvey | 17 | | Co Liverpool | 4:03.40 |
| 7 | 9 | Andrew Clavis | 17 | | Warrington W | 4:04.61 |
| 8 | 7 | Leo Talbot | 14 | | Bolton Metro | 4:08.40 |