EVENT 30 Mens MC 15 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 1 | Alexander Hobbs | 16 | S7 | Mt Kelly | 7:06.90 |
| 2 | 2 | Leo Pellow | 16 | S14 | St Ives Bay | 6:22.44 |
| 3 | 3 | Peter Harper | 20 | S14 | Marlborough | 5:40.39 |
| 4 | 4 | Kieran Williams | 16 | S10 | Newquay | 4:49.37 |
| 5 | 5 | Benjamin Grainger | 15 | S10 | Mt Kelly | 4:42.79 |
| 6 | 6 | Cameron Vearncombe | 16 | S14 | Newquay | 4:33.80 |
| 7 | 7 | Jack Channon | 15 | | Poole | 4:32.86 |
| 8 | 8 | Connor Robinson | 15 | | Plymouth Lea | 4:26.89 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 9 | Liam Openshaw | 15 | | Poole | 4:24.99 |
| 1 | 10 | Oscar North | 15 | | Plymouth Lea | 4:24.32 |
| 2 | 11 | Sam Van Der Stroom | 15 | | Mt Kelly | 4:24.30 |
| 3 | 12 | Sonny Chamberlain-Hyde | 15 | | Seagulls SC | 4:23.62 |
| 4 | 13 | Miles Ward | 15 | | Seagulls SC | 4:22.99 |
| 5 | 14 | Jonah Silk | 15 | | Co Bristol | 4:22.64 |
| 6 | 15 | Alexander Sargeant | 16 | | Millfield | 4:20.80 |
| 7 | 16 | Teilo Crow | 15 | | Co Bristol | 4:20.53 |
| 8 | 17 | Thomas Trebilcock | 15 | | Truro City | 4:20.00 |
| 9 | 18 | Joshua Gammon | 15 | | Barnstaple | 4:19.74 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 19 | Louis Edwards-Pratt | 16 | | Plymouth Lea | 4:19.52 |
| 1 | 20 | James Richardson | 16 | | Seagulls SC | 4:19.36 |
| 2 | 21 | Benjamin Cutbush | 16 | | Poole | 4:17.88 |
| 3 | 22 | Ben Penhale | 15 | | TauntonDeane | 4:17.20 |
| 4 | 23 | Benji Gillingham | 16 | | Mt Kelly | 4:16.60 |
| 5 | 24 | Linus Launhardt | 16 | | Mt Kelly | 4:15.97 |
| 6 | 25 | Alireza Maleki | 16 | | Plymouth Lea | 4:15.50 |
| 7 | 26 | Batuhan Paker | 16 | | Plymouth Lea | 4:14.34 |
| 8 | 27 | James Bartley | 15 | | Mt Kelly | 4:14.24 |
| 9 | 28 | Joseph Day | 17 | | Exeter City | 4:13.70 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 30 | Dylan Gallagher | 15 | | TauntonDeane | 4:11.90 |
| 1 | 32 | Joseph Russell | 16 | | Mt Kelly | 4:09.80 |
| 2 | 34 | Adam Hall | 17 | | Gloucester | 4:04.29 |
| 3 | 36 | Dominic Wooldridge | 23 | | Exeter City | 4:00.50 |
| 4 | 38 | Jakob Goodman | 18 | | Millfield | 3:49.60 |
| 5 | 37 | Brodie Williams | 19 | | Millfield | 3:56.90 |
| 6 | 35 | Thomas Thornley | 19 | | Millfield | 4:03.60 |
| 7 | 33 | Jay Snowden | 18 | | Plymouth Lea | 4:08.10 |
| 8 | 31 | David Miller | 19 | | Plymouth Lea | 4:10.80 |
| 9 | 29 | Zachary Derrick | 17 | | Co Bristol | 4:12.16 |