EVENT 331 Open/Male 16 /Over 50m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | George Brotherston | 16 | Wellingboro | |
| 4 | 4 | David Roe | 42 | Kettering | |
| 5 | 3 | Jamie Mason | 17 | Corby | |
| 6 | 1 | Jack Moore | 16 | Corby | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Wojciech Walach | 16 | Corby | |
| 2 | 8 | Lewis Reynolds | 19 | Nene Valley | |
| 3 | 10 | Joshua Dicks | 17 | Rushden | |
| 4 | 12 | Aaron Mountford | 16 | Wellingboro | |
| 5 | 11 | Jesunefe Abeke | 16 | Corby | |
| 6 | 9 | Zak Hesketh | 16 | Rushden | |
| 7 | 7 | Matthew Kemp | 16 | Wellingboro | |
| 8 | 5 | Rylan Jones | 17 | Wellingboro | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Edun Rowe | 18 | Northampton | |
| 2 | 16 | Oscar Ufton | 17 | Wellingboro | |
| 3 | 18 | Ben Davies | 16 | Corby | |
| 4 | 20 | Daniel Doyle | 18 | Kettering | |
| 5 | 19 | Kristians Kupcovs | 17 | Daventry | |
| 6 | 17 | Jack O'Toole | 16 | Daventry | |
| 7 | 15 | Dorian Marafko | 16 | Corby | |
| 8 | 13 | Aidan Penney | 16 | Wellingboro | |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 24 | Oliver Horne | 17 | Corby | |
| 2 | 30 | Connor Allen | 19 | Wellingboro | |
| 3 | 36 | Thomas Boyt | 27 | Northampton | |
| 4 | 42 | Mark Khametov | 18 | Rushden | |
| 5 | 39 | Max Balderson | 23 | Rushden | |
| 6 | 33 | Henry Knight | 21 | Rushden | |
| 7 | 27 | Oliver Dovey | 16 | Corby | |
| 8 | 21 | Noah Wrightson | 22 | Wellingboro | |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 25 | Lucas Krynauw | 17 | Wellingboro | |
| 2 | 31 | Edward Oscroft | 17 | Northampton | |
| 3 | 37 | Ross Balderson | 26 | Rushden | |
| 4 | 43 | Aman Thethy | 18 | Rushden | |
| 5 | 40 | Adam Frazer | 20 | Rushden | |
| 6 | 34 | Sam Brylka | 17 | Corby | |
| 7 | 28 | Elliott Barker | 19 | Nene Valley | |
| 8 | 22 | Finley Emery | 17 | Rushden | |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Joseph Greaves | 19 | Corby | |
| 2 | 32 | Franklin Phillips | 18 | Nene Valley | |
| 3 | 38 | Aaron Flynn | 36 | Wellingboro | |
| 4 | 44 | Caleb O'Brien | 25 | Corby | |
| 5 | 41 | Aryan Nath | 17 | Corby | |
| 6 | 35 | Finlay Underwood | 17 | Rushden | |
| 7 | 29 | Dylan Bielby | 18 | Kettering | |
| 8 | 23 | Yogi Pateman | 18 | Wellingboro | |