EVENT 103 Open/Male 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Thomas Keefe | 10 | Carnforth | 1:43.60 |
| 4 | 4 | Charlie Fairclough | 10 | Preston | 1:37.69 |
| 5 | 3 | Alexander Foxwell | 10 | Ather & Leig | 1:43.02 |
| 6 | 1 | Jack Smith | 9 | Leyland Barr | 1:45.31 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | James Hibberd | 11 | Preston | 1:34.21 |
| 2 | 9 | Harry Doherty | 10 | Chadderton | 1:32.81 |
| 3 | 12 | Adrian Rogers | 12 | Co Manch Aq | 1:31.10 |
| 4 | 16 | Yi Liao | 12 | Preston | 1:30.00 |
| 5 | 13 | Austin Richardson | 12 | Leyland Barr | 1:30.82 |
| 6 | 11 | Kian Rose | 12 | Co Manch Aq | 1:31.85 |
| 7 | 7 | Jacob Leung | 11 | Crosby | 1:34.00 |
| 8 | 5 | Noah Douglas | 9 | Leyland Barr | 1:35.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Oliver Sellers | 10 | Carnforth | 1:28.72 |
| 2 | 21 | Tom Jones | 12 | Clitheroe | 1:27.27 |
| 3 | 23 | Tomos Newell | 12 | Stretford | 1:27.00 |
| 4 | 25 | Thomas Woodruff | 11 | Carnforth | 1:25.92 |
| 5 | 24 | Oliver Owens | 12 | Leyland Barr | 1:26.99 |
| 6 | 22 | Oscar O'Connell | 11 | Blackpool Aq | 1:27.09 |
| 7 | 20 | Felix Nutter | 11 | Burnley BOBC | 1:27.99 |
| 8 | 18 | Taylor Turner | 12 | Burnley BOBC | 1:28.85 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 28 | Evan Wong | 10 | Preston | 1:24.82 |
| 2 | 31 | Logan Evans | 11 | Blackpool Aq | 1:22.44 |
| 3 | 34 | Zac Jones | 12 | Chadderton | 1:21.93 |
| 4 | 36 | Olly Newbould | 12 | Gt Harwood | 1:19.55 |
| 5 | 35 | Jack Mawdsley | 13 | Preston | 1:19.72 |
| 6 | 33 | Daniel Rykowski | 11 | Leyland Barr | 1:22.27 |
| 7 | 30 | Gabriel Hoch | 13 | Clitheroe | 1:23.02 |
| 8 | 27 | Ethan Walmsley | 12 | Blackburn | 1:25.76 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 38 | Thomas Horabin | 14 | Fleetwood | 1:17.09 |
| 2 | 40 | Daniel Booth | 13 | Crosby | 1:16.68 |
| 3 | 42 | Ethan Williams | 13 | Gt Harwood | 1:16.45 |
| 4 | 44 | Michal Zwardon | 13 | Burnley BOBC | 1:14.78 |
| 5 | 43 | Ewan Finn | 15 | Burnley BOBC | 1:15.75 |
| 6 | 41 | Daniel Ashton | 13 | Blackburn | 1:16.65 |
| 7 | 39 | William Birchall | 12 | Satellite | 1:17.01 |
| 8 | 37 | Luca Cristoforo | 14 | Gt Harwood | 1:19.20 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 46 | William Shears | 15 | Preston | 1:13.36 |
| 2 | 48 | Matthew Richardson | 14 | Preston | 1:12.90 |
| 3 | 51 | Max Shillito | 16 | Skipton | 1:10.83 |
| 4 | 54 | Lewis Clayton | 16 | Burnley BOBC | 1:09.15 |
| 5 | 53 | Edward Smalley | 14 | Northwich | 1:09.16 |
| 6 | 50 | Jacob Birchall | 15 | Blackburn | 1:11.25 |
| 7 | 47 | Freddie Storton | 17 | Gt Harwood | 1:13.29 |
| 8 | 45 | Isaac Peet | 14 | Gt Harwood | 1:14.61 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 56 | Archie Lorimer | 14 | Clitheroe | 1:08.63 |
| 2 | 58 | Mitchell Leek | 15 | Tyldesley | 1:08.11 |
| 3 | 60 | Joseph Peet | 17 | Gt Harwood | 1:07.19 |
| 4 | 62 | Michael Birchall | 17 | Blackburn | 1:06.74 |
| 5 | 61 | Owen Donnelly | 14 | Clitheroe | 1:06.90 |
| 6 | 59 | Isaac Shaw | 14 | Preston | 1:07.35 |
| 7 | 57 | Oliver Nutter | 15 | Burnley BOBC | 1:08.21 |
| 8 | 55 | William Giddings | 16 | Blackpool Aq | 1:09.06 |