EVENT 401 Men 14 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 1 | Bruce Dee | 16 | S6 | Northampton | 6:26.61 |
| 3 | 3 | Max Davies | 15 | S9 | Worksop | 5:13.11 |
| 4 | 5 | Tommy Blacklaws | 14 | | Leic Sharks | 4:54.50 |
| 5 | 4 | William Taylor | 14 | | Louth | 5:05.20 |
| 6 | 2 | Owen Say | 21 | S8 | Nova Cent'n | 5:18.57 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 7 | Jamie Love | 14 | | Nova Cent'n | 4:51.12 |
| 1 | 9 | Seth Hinitt | 16 | | Bassetlaw SS | 4:46.10 |
| 2 | 11 | Robert Taylor | 17 | | Corby | 4:42.80 |
| 3 | 13 | Dylan Jamieson | 14 | | Repton | 4:41.90 |
| 4 | 15 | Bobby Phillips | 17 | | Wellingboro | 4:41.20 |
| 5 | 14 | Lewis Fitch | 15 | | Co Leicester | 4:41.20 |
| 6 | 12 | Harry Fleet | 16 | | Co Leicester | 4:42.50 |
| 7 | 10 | Noah Wrightson | 18 | | Wellingboro | 4:45.00 |
| 8 | 8 | Ryan Norton | 15 | | Boston | 4:46.70 |
| 9 | 6 | Liam Hill | 15 | | Nova Cent'n | 4:51.33 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 17 | Finn Reed | 15 | | Loughborough | 4:39.00 |
| 1 | 19 | Benjamin Gibbons | 15 | | Northampton | 4:36.45 |
| 2 | 21 | Oscar Goldsmith | 14 | | South Lincs | 4:31.20 |
| 3 | 23 | G Sierra Villegas | 17 | | Chesterfield | 4:30.64 |
| 4 | 25 | Alfie Bisby | 15 | | South Lincs | 4:27.30 |
| 5 | 24 | Alex Sadler | 15 | | South Lincs | 4:28.57 |
| 6 | 22 | Sam Leveridge | 16 | | Grantham | 4:31.10 |
| 7 | 20 | Sam Gray | 15 | | Northampton | 4:35.20 |
| 8 | 18 | Oliver Sorrell | 15 | | South Lincs | 4:38.86 |
| 9 | 16 | James Ralph | 15 | | Buxton | 4:40.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 29 | Callum Kettlewell | 18 | | Bassetlaw SS | 4:22.80 |
| 1 | 35 | Luke Stevens | 16 | | Leic Sharks | 4:19.19 |
| 2 | 41 | Jack Blair | 24 | | Chesterfield | 4:12.80 |
| 3 | 47 | Louis Fenson | 20 | | Loughboro Un | 4:08.60 |
| 4 | 53 | Daniel Kennedy | 18 | | Repton | 4:02.10 |
| 5 | 50 | Jackson O'Rourke | 20 | | Northampton | 4:04.70 |
| 6 | 44 | Ben Harrison | 22 | | Loughboro Un | 4:09.96 |
| 7 | 38 | Thomas Dixon | 17 | | Leic Sharks | 4:14.60 |
| 8 | 32 | Daniel Walker | 15 | | Nova Cent'n | 4:21.42 |
| 9 | 26 | Owen Hathway | 16 | | Grantham | 4:26.52 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 30 | Daniel Harris | 15 | | Co Leicester | 4:22.56 |
| 1 | 36 | Jacob Mills | 15 | | Leic Sharks | 4:16.20 |
| 2 | 42 | Razvan Grumazescu | 18 | | Northampton | 4:11.80 |
| 3 | 48 | Sean McCann | 17 | | Co Leicester | 4:08.60 |
| 4 | 54 | Adam Hall | 21 | | Loughboro Un | 4:01.80 |
| 5 | 51 | Joseph Kingsland | 19 | | Nova Cent'n | 4:02.50 |
| 6 | 45 | Joseph Palmer | 19 | | Nova Cent'n | 4:09.20 |
| 7 | 39 | Alex Keeble | 18 | | Leic Sharks | 4:14.40 |
| 8 | 33 | Cillian McGuinness | 17 | | Bassetlaw SS | 4:20.96 |
| 9 | 27 | Leo Allanson | 16 | | Derventio | 4:26.50 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 31 | Findlay Cordle | 15 | | Repton | 4:22.04 |
| 1 | 37 | George Moore | 16 | | Co Leicester | 4:15.76 |
| 2 | 43 | Alexander Harrand | 17 | | Derventio | 4:10.44 |
| 3 | 49 | Elliot Sibley | 17 | | Nova Cent'n | 4:08.25 |
| 4 | 55 | Alex Bregazzi | 24 | | Loughboro Un | 3:56.10 |
| 5 | 52 | Thomas Sansome | 19 | | Loughboro Un | 4:02.30 |
| 6 | 46 | James Raw | 15 | | Co Leicester | 4:08.94 |
| 7 | 40 | Samuel Littler | 19 | | Derventio | 4:14.10 |
| 8 | 34 | Jake Hutchinson | 16 | | Co Leicester | 4:20.09 |
| 9 | 28 | Kallum Quirke | 16 | | Nova Cent'n | 4:25.60 |