EVENT 156 Mens MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 2 | 1 | Peter HARPER | 19 | S14 | Marlborough | 5:34.35 |
| 3 | 2 | Sean ROBINSON | 15 | | Street | 4:32.27 |
| 4 | 3 | Daniel WELLS | 15 | | Gloucester | 4:31.87 |
| 5 | 4 | Benjamin CUTBUSH | 15 | | Poole | 4:31.36 |
| 6 | 5 | James RICHARDSON | 15 | | Seagulls SC | 4:27.45 |
| 7 | 6 | Hayden AH WAN | 15 | | Plymouth Lea | 4:26.39 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 7 | Alexander SARGEANT | 15 | | Millfield | 4:25.00 |
| 2 | 8 | Miles FARRINGTON | 15 | | Swindon Dolp | 4:23.00 |
| 3 | 9 | Joseph DAY | 16 | | Exeter City | 4:20.31 |
| 4 | 10 | Robert WHITTAKER | 16 | | Barnstaple | 4:20.14 |
| 5 | 11 | David MORTON | 16 | | Salisbury | 4:17.70 |
| 6 | 12 | George FARR | 16 | | Co Bristol | 4:15.40 |
| 7 | 13 | Joseph RUSSELL | 15 | | Mt Kelly | 4:14.19 |
| 8 | 14 | William HENDRY | 17 | | Millfield | 4:12.19 |
| 9 | 15 | Herbie HALLETT | 17 | | Street | 4:11.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 16 | Samuel PECK | 17 | | Mt Kelly | 4:11.41 |
| 1 | 17 | Jay SNOWDEN | 17 | | Plymouth Lea | 4:11.30 |
| 2 | 18 | Ben HARRISON | 17 | | Mt Kelly | 4:11.29 |
| 3 | 19 | Adam HALL | 16 | | Gloucester | 4:10.93 |
| 4 | 20 | Thomas BREW | 17 | | Mt Kelly | 4:09.85 |
| 5 | 21 | Matthew MUNDEN | 18 | | Gloucester | 4:09.01 |
| 6 | 22 | Huw WILLIAMS | 15 | | Millfield | 4:08.85 |
| 7 | 23 | William DAVIES | 17 | | Swindon Dolp | 4:06.60 |
| 8 | 24 | Jeffrey CHEN | 21 | | Bath Univ | 4:05.90 |
| 9 | 25 | Joseph TIBBETTS | 19 | | Plymouth Lea | 4:04.89 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 27 | Oscar BRAIN | 16 | | Plymouth Lea | 4:02.70 |
| 1 | 29 | Adam DAVIES | 16 | | Plymouth Lea | 4:00.80 |
| 2 | 31 | William RYLEY | 19 | | Bath Univ | 3:57.00 |
| 3 | 33 | Jakob GOODMAN | 17 | | Millfield | 3:54.60 |
| 4 | 35 | Craig MUNDEN | 20 | | Gloucester | 3:48.37 |
| 5 | 34 | James GILLIE | 19 | | Millfield | 3:54.03 |
| 6 | 32 | Thomas KINGHAM | 19 | | Millfield | 3:55.03 |
| 7 | 30 | Thomas THORNLEY | 18 | | Millfield | 3:58.43 |
| 8 | 28 | Henry DIXON | 17 | | Mt Kelly | 4:02.26 |
| 9 | 26 | Dominic WOOLDRIDGE | 22 | | Exeter City | 4:02.85 |