| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | A.G. | Club | Time |
| 3 | 1 | Larkfield SC | Larkfield | 4:07.68 | |
| 4 | 2 | Beckenham SC | Beckenham | 3:53.61 | |
| 5 | 3 | Tonbridge SC | Tonbridge | 4:06.34 | |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | A.G. | Club | Time |
| 1 | 4 | Dartford District SC | Dartford | 3:56.40 | |
| 2 | 8 | Orpington Ojays | Orpington OJ | 4:02.27 | |
| 3 | 10 | Maidstone SC | Maidstone SC | 3:56.29 | |
| 4 | 12 | Sevenoaks SC | Sevenoaks | 3:49.70 | |
| 5 | 11 | Beachfield Swimming Sq | Beachfield | DN:C . | |
| 6 | 9 | Folkestone Sports Cent | Folkestone | 4:07.80 | |
| 7 | 7 | Bexley SC | Bexley | 3:51.12 | |