EVENT 510 Mens 14/16 Yrs 400m Freestyle Team - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | A.G. | Club/Country | Time |
| 1 | 1 | City of Salford | Open | Co Salford | 3:48.75 |
| 2 | 3 | City of Oxford | Open | Co Oxford | 3:48.06 |
| 3 | 5 | Mount Kelly | Open | Mt Kelly | 3:47.96 |
| 4 | 7 | Camden Swiss Cottage | Open | Camden Swiss | 3:47.08 |
| 5 | 6 | Winsford | Open | Winsford | 3:47.33 |
| 6 | 4 | Dumfries | Open | Dumfries | 3:47.96 |
| 7 | 2 | Newcastle | Open | Newcastle | 3:48.26 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | A.G. | Club/Country | Time |
| 0 | 10 | Gloucester City | Open | Gloucester | 3:46.31 |
| 1 | 14 | City of Sheffield | Open | Co Sheffield | 3:44.85 |
| 2 | 18 | Basildon & Phoenix | Open | Basildon Ph | 3:43.61 |
| 3 | 22 | Plymouth Leander A | Open | Plymouth Lea | 3:41.44 |
| 4 | 26 | City of Cambridge | Open | Co Cambridge | 3:38.85 |
| 5 | 24 | City of Peterborough | Open | Co Peterboro | 3:40.85 |
| 6 | 20 | Guildford City | Open | Guildford Ct | 3:42.18 |
| 7 | 16 | Northampton | Open | Northampton | 3:44.49 |
| 8 | 12 | Wycombe District | Open | Wycombe Dist | 3:45.73 |
| 9 | 8 | City of Glasgow | Open | Co Glasgow | 3:46.48 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | A.G. | Club/Country | Time |
| 0 | 11 | City of Liverpool | Open | Co Liverpool | 3:46.21 |
| 1 | 15 | Royal Wolverhampton | Open | Royal Wolv | 3:44.69 |
| 2 | 19 | Warrender Baths | Open | Warrender Ba | 3:43.21 |
| 3 | 23 | Derventio Excel | Open | Derventio | 3:41.06 |
| 4 | 27 | City of Cardiff | Open | Co Cardiff | 3:38.54 |
| 5 | 25 | City of Leicester | Open | Co Leicester | 3:39.46 |
| 6 | 21 | West Lothian | Open | West Lothian | 3:42.11 |
| 7 | 17 | Portsmouth Northsea | Open | Portsmouth N | 3:44.37 |
| 8 | 13 | Nofio Clwyd | Open | Nofio Clwyd | 3:44.90 |
| 9 | 9 | Plymouth Leander B | Open | Plymouth Lea | 3:46.46 |