| Rank | Perf | Name | Venue | Date | |||
| 1 | 50.49 | Jack Green ð | Moncton, CAN | 23 Jul 10 | |||
| 2 | 53.75 | Antoni Davis-Phillip | Gateshead | 12 Jul 08 | |||
| 3 | 54.4 | Lee Hamilton | Exeter | 20 Jun 09 | |||
| 4 | 54.72 | Lee Hamilton | Abingdon | 6 Jun 09 | |||
| 5 | 55.01 | Shaun Mulligan | Bedford | 3 Jul 05 | |||
| 6 | 55.32 | Howard Frost | Don Valley | 8 Jul 00 | |||
| 7 | 55.55 | Cameron Irwin (2c) | Bedford | 26 Jun 11 | |||
| 8 | 56.0 | Lawrence Wooldridge | Tonbridge | 31 Aug 08 | |||
| 9 | 56.7 | Mark Cryer (2c) | Portsmouth | 21 May 11 | |||
| 10 | 57.00 | Mark Cryer (2c) | Ashford | 19 Jun 11 | |||
| 11 | 57.28 | Victor Barzey | Edinburgh | 25 Jun 05 | |||
| 12 | 59.1 | Jay Hill (2c) | Eton | 4 Jul 09 | |||
| 13 | 62.29 | Jacob Andrews | Kingston | 10 May 09 | |||
| 14 | 62.7 | Quazar Mays | Guildford | 26 Jun 10 | |||
| 15 | 72.71 | Edward Borrmann (2c) | Lee Valley | 16 May 15 |
This ranking table compiled on: Thursday 26th May 2022 21:56:53 (from file)
(2c) = 2nd claim
*K = data from historic Kent AC records (compiled by Len R)
All other data provided by The Power of 10 from British Athletics
Errors and omissions can be submitted by email to
Club Best performance tables for each year are available : Club Best Perfomances