EVENT 158 Mens Open 400m Freestyle - Heats
Not Competing : 24,27,29,30,35
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 1 | Nils Rehm | 14 | S9 | Bristol Nor | 6:47.05 |
| 4 | 2 | Peter Harper | 17 | S14 | Swindon Dolp | 6:17.90 |
| 5 | 3 | Matthew Clowes | 16 | S8 | Caradon | 5:52.40 |
| 6 | 4 | Cameron Vearncombe | 13 | S14 | Caradon | 5:34.99 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 5 | Lyndon Holmes-Beddow | 15 | | St Ives Bay | 4:29.84 |
| 1 | 6 | William Davies | 15 | | Swindon Dolp | 4:28.14 |
| 2 | 7 | Toby Kitchener | 15 | | S Bournem'th | 4:27.99 |
| 3 | 8 | Benjamin Sarachi | 15 | | Gloucester | 4:27.09 |
| 4 | 9 | George Spencer | 15 | | Plymouth Lea | 4:26.54 |
| 5 | 10 | Thomas Brew | 15 | | Mt Kelly | 4:24.90 |
| 6 | 11 | Benjamin Phelps | 16 | | Soundwell | 4:23.24 |
| 7 | 12 | Travis Bramley | 16 | | Caradon | 4:23.02 |
| 8 | 13 | Angus Jarvis | 16 | | N Cornwall | 4:22.89 |
| 9 | 14 | John Byrne | 16 | | Yeovil | 4:21.98 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 15 | Harry Middleton | 15 | | Plymouth Lea | 4:21.09 |
| 1 | 16 | Nathan Linden | 15 | | Plymouth Lea | 4:21.07 |
| 2 | 17 | Jay Snowden | 15 | | Plymouth Lea | 4:21.00 |
| 3 | 18 | George Leaman | 16 | | Clevedon | 4:20.19 |
| 4 | 19 | Henry Dixon | 15 | | Aquae Sulis | 4:16.90 |
| 5 | 20 | Christopher Malone | 15 | | Gloucester | 4:16.87 |
| 6 | 21 | Matthew Collins | 15 | | S Bournem'th | 4:15.88 |
| 7 | 22 | James Watson | 15 | | Swindon Dolp | 4:15.69 |
| 8 | 23 | Joshua Lawson | 16 | | Millfield | 4:13.45 |
| 9 | 25 | Matthew Munden | 16 | | Gloucester | 4:11.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 28 | Edward Lee | 16 | | Plymouth Lea | 4:09.61 |
| 1 | 32 | Dominic Wooldridge | 20 | | Exeter City | 4:04.10 |
| 2 | 34 | Harry Hathaway | 18 | | Mt Kelly | 4:03.00 |
| 3 | 37 | Julian Chan Quee Lin | 18 | | Mt Kelly | 3:56.12 |
| 4 | 39 | Cameron Kurle | 18 | | Millfield | 3:49.70 |
| 5 | 38 | Reece Worth | 19 | | Mt Kelly | 3:54.69 |
| 6 | 36 | Rhys Cole | 19 | | TauntonDeane | 3:58.60 |
| 7 | 33 | Craig Munden | 18 | | Gloucester | 4:03.51 |
| 8 | 31 | Alexander Seymour | 16 | | Mt Kelly | 4:06.59 |
| 9 | 26 | Sean Purvis | 17 | | Swindon Dolp | 4:11.14 |