EVENT 107 Open/Male 15 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Ben Bedford | 15 | Clitheroe | |
| 4 | 4 | Edward Smalley | 15 | Northwich | |
| 5 | 3 | Ben Noakes | 15 | Bolton Metro | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Thomas Fitzpatrick | 15 | Wigan BEST | |
| 2 | 7 | Elijah Carter | 15 | Co Chester | |
| 3 | 9 | William Shears | 15 | Preston | |
| 4 | 11 | Jack Maher | 16 | Hoylake | |
| 5 | 10 | Liam Briars | 15 | Warrington W | |
| 6 | 8 | Christopher Jamieson | 15 | Bebington | |
| 7 | 6 | Tom Bell | 15 | Barrow | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Matthew Bell | 16 | Carlisle Aq | |
| 2 | 15 | Henry Sanderson | 16 | Bebington | |
| 3 | 17 | Elliot Mitchell | 17 | Aquabears | |
| 4 | 19 | Edward Ma | 15 | Winsford | |
| 5 | 18 | Max Offord | 15 | Co Manch Aq | |
| 6 | 16 | Micah-Noel Schrank | 16 | Co Manch Aq | |
| 7 | 14 | Ciaran Turner | 15 | Winsford | |
| 8 | 12 | Benjamin Rowley | 16 | Kendal | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | James Fothergill | 16 | Co Manch Aq | |
| 2 | 23 | Shea Whiteley | 18 | Ramsbottom | |
| 3 | 25 | Fergus Bell | 16 | Ulverston | |
| 4 | 28 | Kyle Briars | 18 | Warrington W | |
| 5 | 26 | Lewis Barratt | 17 | Co Chester | |
| 6 | 24 | Mark Owen | 15 | Bolton Metro | |
| 7 | 22 | James Telfer | 16 | Stockport Mo | |
| 8 | 20 | Robert Goodall | 16 | Aquabears | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Jack Pritchard | 17 | Wigan BEST | |
| 2 | 33 | Thomas Denham-Everett | 20 | Satellite | |
| 3 | 35 | Thomas Hilton | 17 | Warrington W | |
| 4 | 38 | Thomas Binns | 17 | Burnley BOBC | |
| 5 | 37 | Jackson Jardine | 17 | Cockermouth | |
| 6 | 34 | Rhys Pownall | 15 | Preston | |
| 7 | 32 | Andrew Dobbing | 19 | Bebington | |
| 8 | 29 | Leo Taylor | 18 | Leyland Barr | |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 40 | Alfie Owen | 15 | Wigan BEST | |
| 2 | 42 | Max Harvey | 17 | Co Liverpool | |
| 3 | 44 | James Escolme | 18 | Carnforth | |
| 4 | 46 | Archie Dandy | 16 | Warrington W | |
| 5 | 45 | Joseph Ashley | 16 | Co Liverpool | |
| 6 | 43 | Joshua Keogh | 16 | Bolton Metro | |
| 7 | 41 | Lachlan Beazley | 17 | Co Manch Aq | |
| 8 | 39 | Andrew Clavis | 17 | Warrington W | |