EVENT 201 Open/Male 10 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Gregory Cross | 12 | Melton M'bry | 6:28.66 |
| 2 | 4 | Rufus Nunn | 12 | Co Leicester | 6:19.52 |
| 3 | 6 | Milan Rotgers | 11 | Northampton | 6:08.40 |
| 4 | 8 | Jacob Quennell | 12 | Northampton | 6:06.03 |
| 5 | 7 | Harry Statham-Gill | 12 | Co Leicester | 6:07.59 |
| 6 | 5 | Oliver Doran | 12 | Co Leicester | 6:13.59 |
| 7 | 3 | Joseph Bird | 12 | Northampton | 6:25.10 |
| 8 | 1 | Vadim Obuhov | 10 | Co Leicester | 6:49.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Jack Robertson | 13 | Flitwick | 6:00.47 |
| 2 | 12 | Andrei Obuhov | 14 | Braunstone | 5:53.81 |
| 3 | 14 | Louis Pell | 14 | Northampton | 5:49.60 |
| 4 | 16 | James Oscroft | 12 | Northampton | 5:39.09 |
| 5 | 15 | John Graham-Brown | 13 | Co Leicester | 5:44.01 |
| 6 | 13 | Daniil Obuhov | 12 | Co Leicester | 5:53.18 |
| 7 | 11 | George Ridout | 12 | Bassetlaw SS | 5:55.89 |
| 8 | 9 | Jake Allen | 13 | Co Leicester | 6:05.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Oscar Venn | 13 | Northampton | 5:36.41 |
| 2 | 20 | Kevin Varga | 12 | Co Leicester | 5:34.33 |
| 3 | 22 | William Hands | 13 | Co Leicester | 5:27.20 |
| 4 | 24 | Ali Jamili | 13 | Co Leicester | 5:18.70 |
| 5 | 23 | Luke Toland | 14 | Flitwick | 5:22.79 |
| 6 | 21 | Callum Taylor | 14 | Northampton | 5:33.97 |
| 7 | 19 | Joshua Hudson | 12 | Co Leicester | 5:36.08 |
| 8 | 17 | Seth Gillies | 14 | Northampton | 5:37.83 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Victor Bramley-Howell | 15 | Co Leicester | 5:08.39 |
| 2 | 28 | Jacob O'Donnell | 15 | Co Leeds | 5:04.80 |
| 3 | 30 | David Bielawski | 16 | Northampton | 5:03.70 |
| 4 | 32 | George Howard | 13 | Co Leicester | 4:58.66 |
| 5 | 31 | Francesco Monaco | 13 | South Lincs | 5:03.50 |
| 6 | 29 | Oliver Smith | 16 | Radford | 5:04.67 |
| 7 | 27 | Lochlan Shaw | 15 | Flitwick | 5:05.69 |
| 8 | 25 | William Vere | 16 | South Lincs | 5:15.04 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 34 | Kais Alhijazi | 14 | Co Leicester | 4:58.43 |
| 2 | 36 | Emerson-Blu Gupwell | 15 | Co Leicester | 4:55.90 |
| 3 | 38 | Matteo Monaco | 16 | South Lincs | 4:54.22 |
| 4 | 40 | Arthur Blacklaws | 15 | Co Leicester | 4:52.24 |
| 5 | 39 | Jacob Brown | 18 | Lboro Uni | 4:52.62 |
| 6 | 37 | Jacob Briers | 17 | Deepings | 4:55.67 |
| 7 | 35 | Maxwell Burdett | 13 | Co Leicester | 4:57.15 |
| 8 | 33 | Edward Oscroft | 16 | Northampton | 4:58.60 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 42 | Jacson Crabb | 14 | Co Leicester | 4:47.86 |
| 2 | 44 | Edun Rowe | 17 | Northampton | 4:46.60 |
| 3 | 46 | Patrick O'Hara | 15 | Co Leeds | 4:44.88 |
| 4 | 48 | Jack Hurry | 16 | Northampton | 4:41.50 |
| 5 | 47 | Carlos Sierra Villegas | 17 | Chesterfield | 4:42.92 |
| 6 | 45 | Harry Lucas | 15 | Co Leicester | 4:45.20 |
| 7 | 43 | Freddie Burdett | 15 | Co Leicester | 4:47.70 |
| 8 | 41 | Owen Carmody | 15 | Co Leeds | 4:51.00 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 50 | Jack Bignell | 17 | Northampton | 4:35.54 |
| 2 | 52 | Rico Bringeman | 20 | Lboro Uni | 4:31.70 |
| 3 | 54 | Adam Wilson | 22 | Lboro Uni | 4:25.35 |
| 4 | 56 | Moritz Baumgartner | 20 | Lboro Uni | 4:16.70 |
| 5 | 55 | Thomas Wilkinson | 19 | Lboro Uni | 4:24.39 |
| 6 | 53 | Oliver Caddick | 20 | Lboro Uni | 4:25.59 |
| 7 | 51 | Harrison Shaw | 18 | Flitwick | 4:35.44 |
| 8 | 49 | Jack Smith | 15 | Co Leicester | 4:39.00 |