| (1) | 49.9 | David McKenzie | (Croydon Harriers) | Crystal Palace | 11.08.1985 |
| (2) | 50.20 | Omari Carr-Miller | (Croydon Harriers) | Sheffield | 11.07.2009 |
| (3) | 50.52 | Amir Sultan-Edwards | (Blackheath & Bromley Harriers AC) | Lee Valley | 28.04.2018 |
| (4) | 50.74 | Sunny Adebanji | (Herne Hill Harriers) | Copthall | 26.08.2007 |
| (5) | 50.9 | Noel Goode | (Croydon Harriers) | | 7.07.1979 |
| (6) | 51.00 | Paul Roberts | (Mitcham AC) | Crystal Palace | 22.07.1984 |
| (7) | 51.2 | Wayne Tarquini | (Herne Hill Harriers) | Crystal Palace | 28.07.1971 |
| | 51.2 | Nicholas Bee | (Croydon Harriers) | Hull | 13.07.1985 |
| (9) | 51.3 | David Simpson | (Croydon Harriers) | Birmingham | 5.09.1987 |
| (10) | 51.31 | Sylvester Akpalara | (Herne Hill Harriers) | Gateshead | 11.07.2008 |
| (11) | 51.33 | George Sudderick | (Walton AC) | Watford | 22.08.2018 |
| (12) | 51.69 | George Munt | (Sutton & District AC) | Bedford | 9.08.2009 |
| (13) | 51.75 | Precious Ojighoro | (Herne Hill Harriers) | Sheffield | 16.08.2003 |
| (14) | 51.9 | David Moulton | (Blackheath Harriers) | Kingston | 8.06.1996 |
| (15) | 51.91 | Fred Hake | (Herne Hill Harriers) | Eltham | 20.07.2022 |
| (16) | 52.13 | Shaun Cooke | (Sutton & District AC) | Gateshead | 1.07.2011 |
| (17) | 52.47 | Keith Wu | (Croydon Harriers) | Birmingham | 5.09.1993 |
| (18) | 52.48 | James Hilston | (Belgrave Harriers) | Blackpool | 10.07.1993 |
| (19) | 52.5y | Rupert Butterfield | (Guildford & Godalming AC) | | 9.06.1962 |
| (20) | 52.65 | Jon Beharie | (Croydon Harriers) | Nottingham | 8.07.1995 |
| (21) | 52.7 | Mark Awanah | (Lewisham AC) | Crawley | 16.06.1997 |
| | 52.7 | Joash Howard | (Croydon Harriers) | Southampton | 17.06.2006 |
| (23) | 52.72 | Jamal Griffiths-Dyce | (Croydon Harriers) | Birmingham | 30.08.2003 |
| (24) | 52.8 | F Onibuje | (Richmond&T) | Tooting Bec | 24.07.1999 |
| (25) | 52.9 | Peter Tavener | (Walton AC) | Walton | 7.07.1991 |
| | 52.9 | Stephen Mitchell | (Epsom & Ewell Harriers) | Kingston | 3.05.1992 |
| | 52.9 | Gary Brant | (Epsom & Ewell Harriers) | Crawley | 4.04.1999 |
| (28) | 52.97 | Jacob Paul | (Epsom & Ewell Harriers) | Ashford | 24.05.2009 |
| (29) | 53.0 | Moyo Sankofa | (Herne Hill Harriers) | Tooting Bec | 28.07.2001 |
| | 53.0 | Lolu Olowole-Ojo | (Epsom & Ewell Harriers) | Lewes | 19.07.2009 |
| (31) | 53.05 | Raheen Stroude-McLean | (Herne Hill Harriers) | Tooting Bec | 18.06.2011 |
| (32) | 53.1 | Jonathan Osbourne | (Hercules Wimbledon AC) | Kingston | 3.08.2008 |
| | 53.1 | Ricardo King | (Croydon Harriers) | Croydon | 15.07.2012 |
| (34) | 53.11 | Femi Agbetoyin | (Croydon Harriers) | Croydon | 18.07.2010 |
| (35) | 53.19 | M Forster | (Sth Sy Sch ) | Bury St Edmunds | 10.07.1999 |
| (36) | 53.2y | George Petre | (High View Secondary School, Carshalton) | Houghton-le-Spring | 26.07.1958 |
| | 53.2 | Richard Holt | (Blackheath Harriers) | Tooting Bec | 27.04.1986 |
| | 53.20 | Keeran Sriskandarajah | (Herne Hill Harriers) | Eltham | 4.08.2021 |
| (39) | 53.21 | Denee de Emmony | (Belgrave Harriers) | Copthall | 30.08.1998 |
| (40) | 53.4 | Austin Ferns | (Hercules Wimbledon AC) | Walton | 2.07.1995 |
| | 53.4 | Samuel A-Kissi | (Herne Hill Harriers) | Brighton | 21.07.2002 |
| (42) | 53.54 | Theo Raynbird | (Guildford & Godalming AC) | Kingston | 13.06.2009 |
| (43) | 53.56 | Jack Pearce | (South London Harriers) | Birmingham | 14.08.2004 |
| (44) | 53.6 | Steve Simson | (Mitcham AC) | Crystal Palace | 23.07.1969 |
| | 53.6 | D Batchelor | (Guildford & Godalming AC) | Motspur Park | 3.06.1975 |
| | 53.6 | Robert Milner | (Belgrave Harriers) | Kingston | 11.06.1992 |
| | 53.6 | M Foster | (Haslemere Border AC) | Sutton | 29.08.1999 |
| | 53.6 | Jason William | (Croydon Harriers) | Peterborough | 22.07.2001 |
| (49) | 53.7 | Rikkie Letch | (Aldershot, Farnham & District AC) | Milton Keynes | 23.07.2006 |
| (50) | 53.71 | Rob Page | (Windsor, Slough, Eton & Hounslow AC) | Basingstoke | 18.07.2012 |
50 athletes with performances of 53.71 or better. |
