EVENT 401 Boys Open 400m Freestyle - Heats
Not Competing : 25
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Yuvraj UBHI | 9 | Co Leeds | 7:04.00 |
| 4 | 4 | Ruben ANDERSON | 10 | Co Sheffield | 6:32.52 |
| 5 | 3 | John KINUTHIA | 12 | Oldham Aqua | 6:35.00 |
| 6 | 1 | James TUNSTALL | 10 | Leyland Barr | 7:48.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 6 | Owen CARMODY | 9 | Co Leeds | 6:29.26 |
| 1 | 8 | Isaac FOY | 11 | Co Leeds | 6:07.50 |
| 2 | 10 | Samuel EADES | 11 | Co Sheffield | 6:00.50 |
| 3 | 12 | Matthew JAMES | 11 | Co Leeds | 5:54.90 |
| 4 | 14 | Cole WEBSTER | 11 | Ripley | 5:53.21 |
| 5 | 13 | George WOODS | 10 | Co Leeds | 5:54.39 |
| 6 | 11 | Joseph HALL | 11 | Co Leeds | 5:55.52 |
| 7 | 9 | James ADKIN | 12 | Co Leeds | 6:02.80 |
| 8 | 7 | Aarush SHINDE | 12 | Co Leeds | 6:25.75 |
| 9 | 5 | Lucas PIERCY | 11 | Co Leeds | 6:30.61 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 16 | Oscar FENBY | 13 | Thirsk WH | 5:50.00 |
| 1 | 18 | Hari MONTGOMERY | 12 | Co Leeds | 5:49.00 |
| 2 | 20 | George CARRY | 11 | Co Leeds | 5:45.67 |
| 3 | 22 | Joshua BURKILL | 10 | Sutton Cheam | 5:40.00 |
| 4 | 24 | Max STAFFORD-DAVIES | 11 | Hoslow Jets | 5:37.66 |
| 5 | 23 | Tyrese GREGORY | 12 | Co Sheffield | 5:38.80 |
| 6 | 21 | Jacob HASLINGDEN | 10 | Co Sheffield | 5:42.27 |
| 7 | 19 | Matthew ROBERTS | 13 | Co Leeds | 5:47.28 |
| 8 | 17 | Jermaine MANSELL | 12 | Co Sheffield | 5:49.69 |
| 9 | 15 | Henrik HANSEN | 13 | Chorley Marl | 5:52.30 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 27 | Oscar TAYLOR | 14 | Grimsby AST | 5:30.00 |
| 1 | 29 | Theo MIDDLETON | 12 | Bolton | 5:27.70 |
| 2 | 31 | Joseph LEVISON | 12 | Co Leeds | 5:25.75 |
| 3 | 33 | George CURTIS | 12 | Thirsk WH | 5:20.00 |
| 4 | 35 | Nathan DULAY | 13 | Co Leeds | 5:18.96 |
| 5 | 34 | William CURTIS | 14 | Thirsk WH | 5:20.00 |
| 6 | 32 | Adam HAWKINS | 13 | Harrogate | 5:23.40 |
| 7 | 30 | Alexander LEE | 12 | Co Sheffield | 5:26.01 |
| 8 | 28 | Asher MAXFIELD | 11 | Co Leeds | 5:29.20 |
| 9 | 26 | Keiran HEPWORTH | 12 | Co Leeds | 5:32.12 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 37 | Jacob GOODWIN | 13 | Co Leeds | 5:08.10 |
| 1 | 39 | Hamza AL-MAS | 13 | Co Sheffield | 5:05.68 |
| 2 | 41 | William BACON | 14 | Co Leeds | 5:03.71 |
| 3 | 43 | Ethan RICHARDS | 13 | Oldham Aqua | 5:01.70 |
| 4 | 45 | Harry SENIOR | 12 | Co Leeds | 4:57.11 |
| 5 | 44 | Jamie BROADHURST | 13 | Co Leeds | 4:57.27 |
| 6 | 42 | Thomas MILNER | 12 | Co Leeds | 5:02.09 |
| 7 | 40 | Leo TAYLOR | 13 | Leyland Barr | 5:04.90 |
| 8 | 38 | Jad IDRIS | 13 | Co Leeds | 5:05.88 |
| 9 | 36 | Thomas ROBERTS | 16 | Leyland Barr | 5:09.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 47 | Joseph WARD | 15 | Grimsby AST | 4:55.00 |
| 1 | 49 | Oliver WHITTLESTON | 12 | Co Leeds | 4:51.30 |
| 2 | 51 | Henry FIRTH | 14 | Co Leeds | 4:46.65 |
| 3 | 53 | Jack SENIOR | 15 | Co Leeds | 4:45.04 |
| 4 | 55 | Finlay WILLIAMS | 15 | Co Leeds | 4:43.24 |
| 5 | 54 | Benjamin HUGHES | 15 | Grimsby AST | 4:45.00 |
| 6 | 52 | Charlie BROOME | 15 | Co Leeds | 4:45.30 |
| 7 | 50 | Solomon HODGSON | 13 | Co Leeds | 4:47.10 |
| 8 | 48 | Gabriel SHEPHERD | 11 | Harrogate | 4:54.60 |
| 9 | 46 | Benjamin CROSS | 14 | Co Sheffield | 4:56.24 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 57 | Joseph BURNELL | 16 | Co Leeds | 4:40.92 |
| 1 | 59 | Max RUSSELL | 13 | Co Sheffield | 4:35.90 |
| 2 | 61 | Dominic MATHIAS | 14 | Co Leeds | 4:34.68 |
| 3 | 63 | Ben SHELTON | 15 | Co Leeds | 4:29.88 |
| 4 | 65 | Jamie BROOME | 17 | Co Leeds | 4:19.93 |
| 5 | 64 | Akal REHAL | 16 | Co Leeds | 4:23.84 |
| 6 | 62 | George KNOWLES | 14 | Co Leeds | 4:32.45 |
| 7 | 60 | Samuel HOWARTH | 16 | Oldham Aqua | 4:35.20 |
| 8 | 58 | Thomas WILKINSON | 13 | Co Sheffield | 4:39.42 |
| 9 | 56 | Joseph MOMENT | 13 | Scarborough | 4:41.60 |