EVENT 401 Boy Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | James Vaughan | 12 | Wigan BEST | 5:56.13 |
| 2 | 3 | Alfie Owen | 13 | Wigan BEST | 5:39.00 |
| 3 | 5 | Alexander Tew | 13 | York City | 5:24.03 |
| 4 | 7 | Shea Whiteley | 16 | Co Manch Aq | 5:14.20 |
| 5 | 6 | Oliver Crooks | 15 | Bolton Metro | 5:19.94 |
| 6 | 4 | Lewis Brodie | 14 | Stockport Mo | 5:24.50 |
| 7 | 2 | Thomas Bidgood | 13 | Satellite | 5:41.50 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Harvey Reed | 15 | Chase | 5:13.10 |
| 2 | 11 | Benjamin Thorpe | 16 | Newcastle | 5:06.90 |
| 3 | 13 | Cameron Rhodes | 17 | Rotherham Mo | 5:02.10 |
| 4 | 15 | Kyle Offer | 18 | Co Coventry | 4:58.24 |
| 5 | 14 | Zachariah Dale | 15 | Newcastle St | 5:01.70 |
| 6 | 12 | Archie Dandy | 14 | Ellesmere Co | 5:05.80 |
| 7 | 10 | Jasper Hall | 14 | Newcastle | 5:12.80 |
| 8 | 8 | Harry Brancham | 16 | Bassetlaw SS | 5:13.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Finlay Pope | 15 | Stockport Mo | 4:56.40 |
| 2 | 19 | Oliver Caddick | 17 | Chase | 4:51.00 |
| 3 | 21 | Luke Critchlow | 17 | Stockport Mo | 4:50.90 |
| 4 | 23 | Davey Unwin | 16 | Stockport Mo | 4:43.10 |
| 5 | 22 | Ethan Wright | 20 | Winsford | 4:47.70 |
| 6 | 20 | Lucas Waligora | 17 | York City | 4:51.00 |
| 7 | 18 | Archie Neaves | 17 | Ellesmere Co | 4:55.20 |
| 8 | 16 | Ryan Coulthard | 19 | Co Manch Aq | 4:57.30 |