EVENT 102 Open/Male 09 /Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Eli MOODLEY | 11 | Nova Cent'n | 5:21.78 |
| 4 | 3 | Ethan CRAVEN | 10 | Warrington W | 5:14.50 |
| 5 | 2 | Alfie LARHAM | 11 | Co Peterboro | 5:20.08 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Oliver WHITTAKER | 13 | Nova Cent'n | 4:58.87 |
| 2 | 7 | Charlie BISBY | 12 | South Lincs | 4:57.30 |
| 3 | 9 | Ryan LAU | 13 | Co Birm'ham | 4:49.70 |
| 4 | 11 | Finlay HIDDLESTON | 14 | Dumfries | 4:44.93 |
| 5 | 10 | Ilya CERTOVS | 13 | Co Coventry | 4:47.49 |
| 6 | 8 | Benjamin HUNG | 13 | Co Birm'ham | 4:55.10 |
| 7 | 6 | Jasper DE GLOPPER | 12 | Warrington W | 4:57.72 |
| 8 | 4 | Zachary PISCOPO | 12 | Co Peterboro | 5:14.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Matteo MONACO | 14 | South Lincs | 4:41.30 |
| 2 | 15 | Brodie BUTLIN | 14 | Nova Cent'n | 4:39.20 |
| 3 | 17 | Kieran NG | 13 | Co Peterboro | 4:38.68 |
| 4 | 19 | Oliver SMITH | 14 | Nova Cent'n | 4:35.37 |
| 5 | 18 | Henry GILLAM | 13 | Camden Swiss | 4:37.85 |
| 6 | 16 | Jenson PICKETT | 14 | Co Birm'ham | 4:39.11 |
| 7 | 14 | Benjamin TUNSTALL | 14 | Nova Cent'n | 4:40.62 |
| 8 | 12 | Lucas GRANVILLE | 14 | Nova Cent'n | 4:41.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | James FOTHERGILL | 14 | Flixton | 4:30.70 |
| 2 | 23 | Harvey-Jay ALLSOPP | 13 | Nova Cent'n | 4:30.66 |
| 3 | 25 | Rhys EDWARDS | 15 | Dumfries | 4:28.00 |
| 4 | 27 | Oscar GAVELLE | 14 | Rotherham Mo | 4:24.98 |
| 5 | 26 | Joseph STORR | 14 | Co Coventry | 4:26.80 |
| 6 | 24 | Will HEWITT | 14 | Middlesboro | 4:29.50 |
| 7 | 22 | Jacob BACON | 13 | Co Peterboro | 4:30.69 |
| 8 | 20 | Ethan KROL | 14 | Co Coventry | 4:31.64 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Ethan HAMPSHIRE | 16 | Rotherham Mo | 4:22.37 |
| 2 | 31 | Joseph BOX | 15 | Co Birm'ham | 4:21.45 |
| 3 | 33 | Joshua DRURY-TEW | 14 | Co Birm'ham | 4:19.53 |
| 4 | 35 | Dylan JAMIESON | 15 | Repton | 4:17.54 |
| 5 | 34 | David COYLE | 18 | Nova Cent'n | 4:19.20 |
| 6 | 32 | Kian LEE | 15 | Co Peterboro | 4:19.80 |
| 7 | 30 | Sauren SINGH | 15 | Camden Swiss | 4:22.05 |
| 8 | 28 | Max HENDERSON | 15 | Cockermouth | 4:24.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 37 | Patrick DEA | 16 | Co Coventry | 4:16.88 |
| 2 | 39 | Harvey REED | 16 | Co Birm'ham | 4:16.13 |
| 3 | 41 | Jack SWINDALE | 15 | Co Peterboro | 4:14.70 |
| 4 | 43 | Elliot LAWTON | 15 | Co Coventry | 4:14.00 |
| 5 | 42 | Hugh MASON-WILLIAMS | 14 | Co Birm'ham | 4:14.01 |
| 6 | 40 | Oscar GOLDSMITH | 15 | South Lincs | 4:15.27 |
| 7 | 38 | Cillian BRAMHAM | 15 | Camden Swiss | 4:16.31 |
| 8 | 36 | Ritchie GRANT | 16 | Camden Swiss | 4:16.90 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 45 | Joseph MULLIGAN | 17 | Nova Cent'n | 4:10.56 |
| 2 | 47 | James PAGE | 16 | Co Birm'ham | 4:08.50 |
| 3 | 49 | Thomas SWALES | 14 | Nova Cent'n | 4:06.50 |
| 4 | 51 | Elliot SIBLEY | 18 | Nova Cent'n | 4:02.03 |
| 5 | 50 | Luke JEAL | 20 | Nova Cent'n | 4:02.35 |
| 6 | 48 | Damien BATCHELOR | 16 | Co Birm'ham | 4:08.50 |
| 7 | 46 | Daniel WALKER | 15 | Nova Cent'n | 4:09.71 |
| 8 | 44 | Archie NEAVES | 18 | Swansea Uni | 4:11.00 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 53 | Samuel TUCKER | 19 | Lboro Uni | 3:59.57 |
| 2 | 55 | Llewellyn PORTER | 15 | Camden Swiss | 3:59.10 |
| 3 | 57 | Luke BOOTH | 18 | Rotherham Mo | 3:54.33 |
| 4 | 59 | Asterios DALDOGIANNIS | 26 | Lboro Uni | 3:47.57 |
| 5 | 58 | Reece GRADY | 18 | Stockport Mo | 3:48.30 |
| 6 | 56 | Thomas SANSOME | 20 | Lboro Uni | 3:57.70 |
| 7 | 54 | Cameron WRAPSON | 17 | Co Birm'ham | 3:59.38 |
| 8 | 52 | James FROGGATT | 18 | Co Birm'ham | 4:00.10 |