(1) | 51.61 | CBP | Omari Carr-Miller | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 9 May 2009 |
(2) | 51.7 | CBP | David McKenzie | (Croydon Harriers) | 1 FINAL | Croydon Arena | 28 April 1985 |
(3) | 52.28 | | Sylvester Akpalara | (Herne Hill Harriers / (StM&AA)) | 1 FINAL | Kingsmeadow Stadium | 10 May 2008 |
(4) | 52.9 | | Stephen Mitchell | (Epsom & Ewell Harriers) | 1 FINAL | Kingsmeadow Stadium | 3 May 1992 |
(5) | 53.2 | | Richard Holt | (Blackheath Harriers) | 1 FINAL | Tooting Bec | 27 April 1986 |
(6) | 53.30 | | Precious Ojighoro | (Herne Hill Harriers) | 1 FINAL | Kingsmeadow Stadium | 15 May 2004 |
(7) | 53.4 | | Austin Ferns | (Hercules Wimbledon AC) | 1 FINAL | Stompond Lane, Walton | 2 July 1995 |
(8) | 53.6 | CBP | D Batchelor | (Guildford & Godalming AC) | HEATS | Motspur Park | 3 June 1975 |
(9) | 53.7 | | Keith Wu | (Croydon Harriers) | 1 FINAL | Croydon Arena | 16 May 1993 |
(10) | 53.8 | | D Batchelor | (Guildford & Godalming AC) | 1 FINAL | Motspur Park | 7 June 1975 |
(11) | 53.9 | | Rikkie Letch | (Aldershot, Farnham & District AC) | 1 FINAL | Kingsmeadow Stadium | 12 May 2007 |
(12) | 53.99 | | Sylvester Akpalara | (Herne Hill Harriers / (StM&AA)) | 1h1 HEAT 1 | Kingsmeadow Stadium | 10 May 2008 |
(13) | 54.02 | | Joash Howard | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 13 May 2006 |
(14) | 54.07 | | Shaun Cooke | (Sutton & District AC) | 1 FINAL | Kingsmeadow Stadium | 14 May 2011 |
(15) | 54.2 | | David McKenzie | (Croydon Harriers) | 1 HEAT 1 | Croydon Arena | 28 April 1985 |
(16) | 54.22 | | Joash Howard | (Croydon Harriers) | 1 HEAT 1 | Kingsmeadow Stadium | 13 May 2006 |
(17) | 54.3 | | Wayne Tarquini | (Herne Hill Harriers / StockwellMS) | 1 FINAL | Motspur Park | 5 June 1971 |
(18) | 54.5 | | David Bond | (Woking AC) | 2 FINAL | Tooting Bec | 27 April 1986 |
| 54.5 | | David Moulton | (South London Harriers) | 2 FINAL | Stompond Lane, Walton | 2 July 1995 |
| 54.5 | | Moyo Sankofa | (Herne Hill Harriers) | 1 FINAL | Kingsmeadow Stadium | 13 May 2001 |
(21) | 54.62 | | George Munt | (Sutton & District AC) | 2 FINAL | Kingsmeadow Stadium | 9 May 2009 |
(22) | 54.7 | | I Moriarty | (Wallington High School) | 1 FINAL | Motspur Park | 10 June 1972 |
(23) | 54.8 | | J Robinson | (Croydon Harriers) | 1 HEAT 2 | Tooting Bec | 27 April 1986 |
| 54.8 | | Gary Parker | (Aldershot, Farnham & District AC) | 1 FINAL | Kingsmeadow Stadium | 26 July 1997 |
| 54.8 | | Precious Ojighoro | (Herne Hill Harriers) | 1 FINAL | Kingsmeadow Stadium | 10 May 2003 |
(26) | 55.0 | | Kevin Fitzpartick | (Croydon Harriers) | 1 FINAL | Croydon Arena | 24 April 1983 |
(27) | 55.02 | | Samuel A-Kissi | (Herne Hill Harriers) | 1 FINAL | Kingsmeadow Stadium | 11 May 2002 |
(28) | 55.1 | | M Brockington | (Kent AC) | 1 FINAL | Motspur Park | 14 May 1977 |
| 55.1 | | Stephen Green | (Guildford & Godalming AC) | 1 FINAL | Stompond Lane, Walton | 16 June 1996 |
| 55.1 | | Kevin Cayley | (unattached) | 2 FINAL | Stompond Lane, Walton | 16 June 1996 |
(31) | 55.3 | | J Veglio | (John Fisher School, Purley) | 2 FINAL | Motspur Park | 10 June 1972 |
| 55.3 | | S J Ward | (Hercules Wimbledon AC) | 1 HEAT 1 | Motspur Park | 29 April 1978 |
| 55.3 | | Paul Roberts | (Mitcham AC) | 1 FINAL | Croydon Arena | 29 April 1984 |
| 55.3 | | P Hull | (Woking AC) | 3 FINAL | Tooting Bec | 27 April 1986 |
(35) | 55.39 | | Burton Dredge | (Herne Hill Harriers) | 2 FINAL | Kingsmeadow Stadium | 13 May 2006 |
(36) | 55.4 | | Robert Milner | (Belgrave Harriers) | 2 FINAL | Kingsmeadow Stadium | 3 May 1992 |
| 55.4 | | Eshref Hassan | (Belgrave Harriers) | 1 FINAL | Croydon Arena | 14 May 1994 |
(38) | 55.41 | | Lewis Lloyd | (Herne Hill Harriers) | 2 FINAL | Kingsmeadow Stadium | 10 May 2008 |
(39) | 55.5 | | P Blezard | (Kings College School, Wimbledon) | 2 FINAL | Motspur Park | 5 June 1971 |
| 55.5 | | David Bond | (Woking AC) | 1 HEAT 3 | Tooting Bec | 27 April 1986 |
| 55.5 | | J Robinson | (Croydon Harriers) | 4 FINAL | Tooting Bec | 27 April 1986 |
| 55.5 | | Richard Aspden | (Epsom & Ewell Harriers) | 1 FINAL | Kingsmeadow Stadium | 21 April 1991 |
| 55.5 | | Jamal Dyce | (Croydon Harriers) | 2 FINAL | Kingsmeadow Stadium | 10 May 2003 |
(44) | 55.58 | | Patrick Lucas | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 8 May 2010 |
(45) | 55.6 | | Richard Vassall | (Guildford & Godalming AC) | 1 FINAL | Motspur Park | 26 April 1980 |
| 55.6 | | A Ross | (Belgrave Harriers) | 5 FINAL | Tooting Bec | 27 April 1986 |
| 55.6 | | Stephen Green | (Guildford & Godalming AC) | 1 HEAT 1 | Stompond Lane, Walton | 16 June 1996 |
| 55.6 | | Andrew Jenner | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 9 May 1998 |
| 55.6 | | James Clement | (Camberley & District AC) | 3 FINAL | Kingsmeadow Stadium | 10 May 2003 |
(50) | 55.61 | | Richard Smeaton | (Kingston AC & Polytechnic Harriers) | 3 FINAL | Kingsmeadow Stadium | 13 May 2006 |
(51) | 55.64 | | Gari Brown | (Windsor, Slough, Eton & Hounslow AC) | 1h2 HEAT 2 | Kingsmeadow Stadium | 10 May 2008 |
(52) | 55.7 | | Andrew Jenner | (Croydon Harriers) | 1 HEAT 1 | Kingsmeadow Stadium | 9 May 1998 |
| 55.7 | | David Stokes | (Aldershot, Farnham & District AC) | 1 FINAL | Croydon Arena | 14 May 2000 |
(54) | 55.8 | | P Young | (Hercules Wimbledon AC) | 1 FINAL | Motspur Park | 15 May 1976 |
| 55.8 | | R Mitchison | (Woking AC) | 1 HEAT 2 | Motspur Park | 29 April 1978 |
| 55.8 | | S J Ward | (Hercules Wimbledon AC) | 1 FINAL | Motspur Park | 30 April 1978 |
| 55.8 | | Richard Vassall | (Guildford & Godalming AC) | 1 HEAT 4 | Motspur Park | 26 April 1980 |
| 55.8 | | S Frogley | (Haslemere Border AC) | 2 FINAL | Croydon Arena | 24 April 1983 |
(59) | 55.82 | | Laurie Overtoom | (Reigate Priory AC) | 2 FINAL | Kingsmeadow Stadium | 14 May 2011 |
(60) | 55.9 | | D Pinsent | (St Josephs's College, Upper Norwood) | 1 FINAL | Motspur Park | 29 April 1979 |
| 55.9 | | Stephen Vaughan | (Epsom & Ewell Harriers) | 1 FINAL | Sheerwater, Woking | 22 April 1990 |
| 55.90 | | Lewis Lloyd | (Herne Hill Harriers) | 2h2 HEAT 2 | Kingsmeadow Stadium | 10 May 2008 |
(63) | 55.93 | | Gari Brown | (Windsor, Slough, Eton & Hounslow AC) | 3 FINAL | Kingsmeadow Stadium | 10 May 2008 |
(64) | 55.97 | | Burton Dredge | (Herne Hill Harriers) | 1 HEAT 2 | Kingsmeadow Stadium | 13 May 2006 |
| 55.97 | | Edward Baxter-Derrington | (Sutton & District AC) | 2 HEAT 1 | Kingsmeadow Stadium | 13 May 2006 |
(66) | 56.0 | | S Jackson | (Redhill & Reigate AC) | 1 FINAL | Motspur Park | 19 May 1973 |
| 56.0 | | A Moore | (Surrey AC) | 1 FINAL | Motspur Park | 25 April 1981 |
| 56.0 | | Paul Roberts | (Mitcham AC) | 1 HEAT 2 | Croydon Arena | 29 April 1984 |
| 56.0 | | M Hadden | (Haslemere Border AC) | 1 HEAT 1 | Sheerwater, Woking | 22 April 1990 |
| 56.0 | | Chris Purser | (Croydon Harriers) | 2 FINAL | Croydon Arena | 14 May 1994 |
(71) | 56.1 | | Jean-Paul Fernee | (Belgrave Harriers) | 2 FINAL | Motspur Park | 15 May 1976 |
| 56.1 | | J Rowland | (Dorking St Paul's AC) | 2 FINAL | Motspur Park | 29 April 1979 |
| 56.1 | | M Reynolds | (Mitcham & Sutton AC) | 1 HEAT 2 | Sheerwater, Woking | 23 April 1989 |
(74) | 56.2 | | J Chappell | (St Jos Col) | 2 FINAL | Motspur Park | 14 May 1977 |
| 56.2 | | S Staniforth | (Sutton & Cheam Harriers) | 3 FINAL | Motspur Park | 29 April 1979 |
| 56.2 | | P Hull | (Woking AC) | 1 HEAT 1 | Tooting Bec | 27 April 1986 |
| 56.2 | | A Ross | (Belgrave Harriers) | 2 HEAT 2 | Tooting Bec | 27 April 1986 |
(78) | 56.21 | | Aaron Denton | (Crawley AC) | 2 FINAL | Kingsmeadow Stadium | 11 May 2002 |
(79) | 56.23 | | Jose Costa | (Hercules Wimbledon AC) | 2h1 HEAT 1 | Kingsmeadow Stadium | 10 May 2008 |
(80) | 56.3 | | M Reynolds | (Mitcham & Sutton AC) | 1 FINAL | Sheerwater, Woking | 23 April 1989 |
(81) | 56.4 | | Richard Haizelden | (Sutton & Cheam Harriers) | 1 HEAT 1 | Motspur Park | 26 April 1980 |
| 56.4 | | T Butler | (Woking AC) | 2 FINAL | Motspur Park | 26 April 1980 |
| 56.4 | | R Jackson | (Haslemere Border AC) | 2 FINAL | Croydon Arena | 28 April 1985 |
| 56.4 | | Paul Brennan | (Charterhouse School, Godalming) | 1 FINAL | Kingsmeadow Stadium | 9 May 1999 |
(85) | 56.5 | | J Downing | (Guildford & Godalming AC) | 2 FINAL | Croydon Arena | 29 April 1984 |
| 56.5 | | Richard Holt | (Blackheath Harriers) | 2 HEAT 1 | Tooting Bec | 27 April 1986 |
| 56.5 | | S Booth | (Belgrave Harriers) | 2 FINAL | Sheerwater, Woking | 22 April 1990 |
| 56.5 | | Richard Nehme | (Hercules Wimbledon AC) | 2 FINAL | Kingsmeadow Stadium | 9 May 1999 |
(89) | 56.6 | | C Miller | (Hercules Wimbledon AC) | 1 FINAL | Motspur Park | 18 May 1974 |
| 56.6 | | R Mitchison | (Woking AC) | 2 FINAL | Motspur Park | 30 April 1978 |
| 56.6 | | Robert Jackson | (Waverley Harriers) | 3 FINAL | Croydon Arena | 29 April 1984 |
| 56.6 | | Joseph Godsell | (Blackheath Harriers) | 2 FINAL | Kingsmeadow Stadium | 9 May 1998 |
(93) | 56.7 | | A R Vaughan | (Epsom & Ewell Harriers) | 4 FINAL | Motspur Park | 29 April 1979 |
| 56.7 | | M Hadden | (Haslemere Border AC) | 3 FINAL | Sheerwater, Woking | 22 April 1990 |
| 56.7 | | J Wells | (Tiffin School, Kingston) | 4 FINAL | Sheerwater, Woking | 22 April 1990 |
| 56.7 | | J Oshinowo | (Hercules Wimbledon AC) | 3 FINAL | Kingsmeadow Stadium | 3 May 1992 |
(97) | 56.8 | | S Staniforth | (Sutton & Cheam Harriers) | 1 HEAT 1 | Motspur Park | 28 April 1979 |
| 56.8 | | Tom Kane | (Epsom & Ewell Harriers) | 3 FINAL | Motspur Park | 26 April 1980 |
| 56.8 | | A Moore | (Surrey AC) | 1 HEAT 1 | Motspur Park | 25 April 1981 |
| 56.8 | | J Dale | (Ranelagh Harriers) | 2 FINAL | Sheerwater, Woking | 23 April 1989 |
| 56.8 | | Connor Vine | (Aldershot, Farnham & District AC) | 2 FINAL | Kingsmeadow Stadium | 12 May 2007 |
|
101 performances of 56.80 or better. |