EVENT 204 Boys 11/14 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Storm MUNDAY | 11 | TauntonDeane | 6:14.80 |
| 1 | 2 | Paul O'LOUGHLIN | 11 | Plymouth Lea | 6:14.36 |
| 2 | 3 | Ryan OPENSHAW | 11 | Poole | 6:12.89 |
| 3 | 4 | Harrison CROOK | 12 | Swindon Dolp | 6:11.00 |
| 4 | 5 | Archie TYERS | 12 | Exeter City | 6:10.41 |
| 5 | 6 | Milo TRELOAR | 12 | S Bournem'th | 6:09.80 |
| 6 | 7 | Matthew WORKMAN | 12 | S Bournem'th | 6:07.10 |
| 7 | 8 | Oliver SAUNDERS | 11 | Aquae Sulis | 6:06.37 |
| 8 | 9 | Finlay SAUNDERS | 13 | Aquae Sulis | 5:55.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 10 | Kai WEEKS | 13 | Seagulls Swi | 5:55.00 |
| 1 | 11 | Oliver HEARD | 12 | TauntonDeane | 5:53.10 |
| 2 | 12 | Arthur BOWN-MAZZONI | 13 | Aquae Sulis | 5:51.77 |
| 3 | 13 | Alec FARQUHARSON | 13 | Paignton | 5:51.40 |
| 4 | 14 | James COX | 13 | Co Bristol | 5:51.20 |
| 5 | 15 | George COOK | 13 | Weston S M | 5:48.70 |
| 6 | 16 | Joseph GILES | 13 | Cirencester | 5:48.40 |
| 7 | 17 | Robbie HEMMINGS | 12 | Poole | 5:48.40 |
| 8 | 18 | Calvin FRY | 12 | Millfield | 5:45.90 |
| 9 | 19 | Farran GREGORY | 12 | Weston S M | 5:45.50 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 20 | Oscar PEARCEY | 13 | Swindon Dolp | 5:44.21 |
| 1 | 21 | Thomas TREBILCOCK | 13 | Truro City | 5:42.00 |
| 2 | 22 | Salvador GORDO | 13 | Plymouth Lea | 5:39.56 |
| 3 | 23 | Luca RIEZZO | 13 | Exeter City | 5:37.60 |
| 4 | 24 | Cameron VEARNCOMBE | 14 | Caradon | 5:36.10 |
| 5 | 25 | Samuel NORTON | 14 | Truro City | 5:35.80 |
| 6 | 26 | Samuel ARROWSMITH | 13 | Tiverton | 5:35.60 |
| 7 | 27 | George LANGMAN | 14 | Weston S M | 5:33.50 |
| 8 | 28 | Duncan BISSET | 14 | Gloucester | 5:33.30 |
| 9 | 29 | Alexander DORAN | 14 | Salisbury | 5:32.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 30 | Drew MCGREGOR | 13 | S Bournem'th | 5:31.00 |
| 1 | 31 | Dylan GALLAGHER | 13 | TauntonDeane | 5:30.80 |
| 2 | 32 | Jonah SILK | 13 | Co Bristol | 5:30.60 |
| 3 | 33 | William HALLIWELL | 14 | Severnside | 5:28.20 |
| 4 | 34 | Marshall FITCHETT | 14 | TigersharksW | 5:25.70 |
| 5 | 35 | David O'LOUGHLIN | 12 | Plymouth Lea | 5:25.56 |
| 6 | 36 | Liam OPENSHAW | 13 | Poole | 5:25.50 |
| 7 | 37 | Miles WARD | 13 | Seagulls Swi | 5:24.60 |
| 8 | 38 | Jami SCHLUETER | 14 | Millfield | 5:24.00 |
| 9 | 39 | Daniel WELLS | 14 | Gloucester | 5:23.90 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 41 | Benjamin HOLLAND | 13 | Mt Kelly | 5:22.90 |
| 1 | 43 | Alexander SARGEANT | 14 | Millfield | 5:17.30 |
| 2 | 45 | Oliver FAIRMAN | 14 | S Bournem'th | 5:09.40 |
| 3 | 47 | Jack PLUMMER | 14 | Mt Kelly | 5:03.40 |
| 4 | 49 | Finnian TREHANE | 14 | Bourmth Coll | 4:53.20 |
| 5 | 48 | Huw WILLIAMS | 14 | Millfield | 4:57.60 |
| 6 | 46 | Ethan MCNEIL | 14 | Aquae Sulis | 5:08.50 |
| 7 | 44 | Ben PENHALE | 13 | Clevedon | 5:16.32 |
| 8 | 42 | Jayden WORDLEY | 13 | Aquae Sulis | 5:17.40 |
| 9 | 40 | Cameron LEWIS | 14 | Gloucester | 5:23.20 |