EVENT 406 Open/Male 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 2 | Gabriel Barnett | 14 | | Blackpool Aq | |
| 2 | 4 | Giorgio Oxby | 20 | SB14 | Winsford | |
| 3 | 6 | Ethan Prior | 13 | | Leyland Barr | |
| 4 | 8 | George Annette | 16 | | Co Salford | |
| 5 | 7 | James Vaughan | 15 | | Wigan BEST | |
| 6 | 5 | Michael Pudjianto | 13 | | Trafford Met | |
| 7 | 3 | Andrew Wu | 13 | | Trafford Met | |
| 8 | 1 | Nathaniel Costigan | 25 | SB12 | Satellite | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 10 | Rowan Allison | 17 | | Preston | |
| 2 | 12 | Finlay Warburton | 15 | | Leyland Barr | |
| 3 | 14 | Patrick Harriman | 16 | | Satellite | |
| 4 | 16 | Aaron Kewley | 16 | | Hoylake | |
| 5 | 15 | Samuel Lee | 15 | | Trafford Met | |
| 6 | 13 | Ben Cook | 16 | | Burnley BOBC | |
| 7 | 11 | Thomas Harris | 16 | | Clitheroe | |
| 8 | 9 | Charlie Hall | 16 | | Workington | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 18 | Jacob Brookes | 20 | | Io Man | |
| 2 | 20 | Max Henderson | 17 | | Cockermouth | |
| 3 | 22 | Joey Standard | 15 | | Stockport Mo | |
| 4 | 24 | Zachary Bellhouse | 18 | | Io Man | |
| 5 | 23 | Oscar Hodgson | 16 | | Cockermouth | |
| 6 | 21 | Las Al-Dabak | 17 | | Stockport Mo | |
| 7 | 19 | Alfie Owen | 16 | | Wigan BEST | |
| 8 | 17 | George Pearce | 14 | | Co Liverpool | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 28 | Jefferson Jones | 16 | | Winsford | |
| 2 | 34 | Oscar Donnelly | 17 | | Co Liverpool | |
| 3 | 40 | Luke Hoey | 23 | | Co Salford | |
| 4 | 46 | King Sum Loo | 18 | | Co Salford | |
| 5 | 43 | Billie Fu | 17 | | Stockport Mo | |
| 6 | 37 | Matthew Yeung | 16 | | Co Salford | |
| 7 | 31 | Nathan Healey | 16 | | Wigan BEST | |
| 8 | 25 | James Farnan | 15 | | Io Man | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 29 | Jack Calderbank | 14 | | Bolton Metro | |
| 2 | 35 | Mackinlay Houghton | 21 | | Halton | |
| 3 | 41 | Thomas O'Brien | 17 | | Stockport Mo | |
| 4 | 47 | Jack Blair | 27 | | Satellite | |
| 5 | 44 | James Escolme | 19 | | Carnforth | |
| 6 | 38 | Adam Kelly | 17 | | Cockermouth | |
| 7 | 32 | Rhys Pownall | 16 | | Preston | |
| 8 | 26 | William O'Brien | 14 | | Stockport Mo | |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 30 | Ryan Potter | 22 | SB14 | Preston | |
| 2 | 36 | Ollie Lambert | 16 | | Co Liverpool | |
| 3 | 42 | Jonathon Waters | 17 | | Preston | |
| 4 | 48 | Karnell Nunes-Smith | 21 | | Co Manch Aq | |
| 5 | 45 | Isaac Spinks | 20 | | Bolton Metro | |
| 6 | 39 | Logan Warburton | 16 | | Preston | |
| 7 | 33 | Jacob Garczynski | 14 | | Io Man | |
| 8 | 27 | Cormac Whiteley | 15 | | Ramsbottom | |