EVENT 108 Mens Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Arensi Isufi | 15 | Co Manch Aq | DQ: . |
| 3 | 3 | Alexander Volkovoy | 14 | Co Salford | 5:08.18 |
| 4 | 5 | Jacob Scott | 15 | Wigan BEST | 5:03.22 |
| 5 | 4 | Thomas Kud | 14 | Winsford | 5:01.86 |
| 6 | 2 | Joshua King | 15 | Bolton Metro | 4:55.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 7 | Connor Hartley | 14 | Co Salford | 5:05.81 |
| 2 | 9 | Ben Jenkinson | 16 | Cockermouth | 4:52.12 |
| 3 | 11 | R Rowbotham-Keating | 14 | Co Manch Aq | 4:36.89 |
| 4 | 13 | Kyle McKenna | 17 | Wigan BEST | 4:48.96 |
| 5 | 12 | Benjamin Havers-Strong | 16 | Preston | 4:56.91 |
| 6 | 10 | Ben Smith | 18 | Wigan BEST | 4:50.66 |
| 7 | 8 | Spencer Sheard | 15 | Dane Valley | 4:57.26 |
| 8 | 6 | Matthew Charlesworth | 13 | Blackpool Aq | 5:10.73 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 15 | Elliot Pickford | 19 | Co Manch Aq | 4:51.84 |
| 2 | 17 | Luke Adams | 17 | Co Salford | 4:46.94 |
| 3 | 19 | Jack O'Brien | 19 | Co Manch Aq | 4:39.80 |
| 4 | 21 | Oliver Taylor | 15 | Co Manch Aq | 4:50.14 |
| 5 | 20 | Harper Whitehead | 18 | Dane Valley | 4:42.45 |
| 6 | 18 | Jack Smith | 15 | Cockermouth | 4:34.37 |
| 7 | 16 | Tyler Melbourne-Smith | 14 | Co Liverpool | 4:45.00 |
| 8 | 14 | Jack Ivison | 18 | Cockermouth | 4:46.96 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 23 | Harry Whiteman | 19 | Co Manch Aq | 4:40.87 |
| 2 | 25 | Jamie McCaffray | 18 | Co Manch Aq | 4:41.21 |
| 3 | 27 | Pierce Greening | 16 | Cockermouth | 4:34.34 |
| 4 | 29 | Thomas Paine | 25 | Co Manch Aq | 4:26.95 |
| 5 | 28 | Matthew Domville | 22 | Warrington W | 4:34.81 |
| 6 | 26 | James Bilbao | 18 | Co Manch Aq | 4:39.24 |
| 7 | 24 | Max Adams | 15 | Co Salford | 4:44.85 |
| 8 | 22 | Ellis Cleworth | 15 | Co Liverpool | 4:38.79 |