|
300 Metres (Standard: 44.00) |
| 36.69 | 3s1 | Chris Annous | Herne Hill Harriers | Birmingham | 6 Jul | | |
| 37.39 | 1 | Tom Harmsworth | Sutton & District AC | Kingston | 25 May | | |
| 37.7 | 1A | Feysel Nadew | Herne Hill Harriers | Winchester | 1 Jun | | |
| 38.69 | 2 | Joseph Massimo | Crawley AC | Kingston | 25 May | | |
| 38.89 | 1h1 | Alex Gooch | Aldershot, Farnham & District AC | Woking | 1 Sep | | |
| 38.93 | 2 | Charlie Phillips | Kingston AC & Polytechnic Harriers | Hendon | 11 Jun | | |
| 39.08 | 1A | Daniel Farley | Woking AC | Horspath | 21 Jul | | |
| 39.24 | 4 | Killian Elliot | Croydon Harriers | Kingston | 25 May | | |
| 39.4 | 2h4 | Euan Traynor | Walton AC | Crystal Palace | 7 Jul | | |
| 39.64 | 1h2 | Sam Cantelo | Camberley & District AC | Woking | 1 Sep | | |
| 39.7 | 5 | Ramone Stroude-Garcia | Herne Hill Harriers | Battersea Park | 8 Jun | | |
| 39.7 | 2B | Jonathan Chen | Herne Hill Harriers | Carshalton | 13 Jul | | |
| 39.84 | 2h2 | Brandon Wallace | Herne Hill Harriers | Kingston | 25 May | | |
| 39.9 | 3h3 | Dejean Falconer | Herne Hill Harriers | Crystal Palace | 7 Jul | | |
| 40.0 | 1B | Matthew Boxall | Crawley AC | Crawley | 13 Jul | | |
| 40.1 | 4B | Kieron Connor | Croydon Harriers | Carshalton | 13 Jul | | |
| 40.2 | 2A | Tom McGachie | Dorking Mole Valley AC | Carshalton | 1 Jun | | |
| 40.22 | 2A | Edward Morrison | Camberley & District AC | Horspath | 30 Jun | | |
| 40.3 | 1A | Ace McCarthy | Sutton & District AC | Carshalton | 22 Jun | | |
| 40.4 | 5h1 | Capre Cole | Croydon Harriers | Crystal Palace | 7 Jul | | |
| 40.44 | 3h1 | George Patten | Aldershot, Farnham & District AC | Kingston | 25 May | | |
| 41.0 | 1B | Antony Flanagan | Herne Hill Harriers | Southampton | 22 Jun | | |
| 41.0 | 1B | Frederique Richards | Walton AC | Walton | 13 Jul | | |
| 41.1 | 4A | Oscar Tyrrell | Kingston AC & Polytechnic Harriers | Horsham | 1 Jun | | |
| 41.31 | 5h3 | Tom Wood | Aldershot, Farnham & District AC | Kingston | 8 Jun | | |
| 41.6 | 4B | Hallam Webb | Camberley & District AC | Crawley | 13 Jul | | |
| 41.68 | 6h3 | Samuel Cheesman | Guildford & Godalming AC | Kingston | 25 May | | |
| 41.8 | 4A | Umran Bhatti | South London Harriers | Walton | 13 Jul | | |
| 41.95 | 1B | Ethan Sears | Camberley & District AC | Horspath | 21 Jul | | |
| 42.09 | 7h3 | Hayden Young | Reigate Priory AC | Kingston | 25 May | | |
| 42.4 | 1B | Ben Charnock | Sutton & District AC | Carshalton | 4 May | | |
| 42.4 | 3B | Jonny Lecoutre | Guildford & Godalming AC | Guildford | 13 Jul | | |
| 42.5 | 2A | Ross Maxwell | Camberley & District AC | Eltham | 4 May | | |
| 42.7 | 6A | William Rowe | Kingston AC & Polytechnic Harriers | Guildford | 13 Jul | | |
| 42.8 | 4B | Aaron Bruce | Kingston AC & Polytechnic Harriers | Guildford | 13 Jul | | |
| 42.8 | 2ns | Harry Williams | Camberley & District AC | Horspath | 21 Jul | | |
| 42.82 | 5h1 | Harry Boyd | Guildford & Godalming AC | Woking | 1 Sep | | |
| 43.0 | 4B | Ashley Harvell | Camberley & District AC | Bracknell | 1 Jun | | |
| 43.2 | 3B | Malik Afe | Croydon Harriers | Southampton | 22 Jun | | |
| 43.32 | 5h2 | Alfie Stickler | Aldershot, Farnham & District AC | Kingston | 25 May | | |
| 44.0 | 5A | Darren Meaklim | Kingston AC & Polytechnic Harriers | Woking | 22 Jun | | |
| 44.0 | 3ns | Alex Rodrigues | Camberley & District AC | Horspath | 21 Jul | | |