| Rank | Perf | Name | Venue | Date | |||
| 1 | 48.60 | Jack Green ð | Crystal Palace | 13 Jul 12 | |||
| 2 | 52.21 | Cameron Irwin (2c) | Birmingham | 22 Jun 12 | |||
| 3 | 52.6 | Shaun Mulligan | Crawley | 5 Aug 06 | |||
| 4 | 53.61 | Lee Hamilton | Gateshead | 13 Aug 11 | |||
| 5 | 54.41 | Shaun Mulligan | Crawley | 13 Aug 06 | |||
| 6 | 55.08 | Panashe Majuru | Cardiff | 14 Jul 19 | |||
| 7 | 55.15 | Lawrence Wooldridge | Derby | 22 Aug 09 | |||
| 8 | 55.39 | Antoni Davis-Phillip | Cardiff | 5 Jun 10 | |||
| 9 | 58.30 | Victor Barzey | Swansea | 3 Jun 06 | |||
| 10 | 60.62 | Quazar Mays | Woodford | 16 Apr 11 | |||
| 11 | 77.8 | Edward Borrmann (2c) | Croydon | 8 Jul 17 |
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