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| 100 Metres (Standard: 13.00) |
| | 10.99/0.6 | 1B07 | Piers Spencer-Simms (U14) | Blackheath & Bromley Harriers AC | Stratford (CT) | 8 Sep | | |
| | 11.43/0.8 | 3s2 | Anjelho Macabee-Rose (U14) | Croydon Harriers | Walton | 11 Aug | | |
| | 11.48/+3.4 w | 2 | Grindan Abrahams (U14) | Kingston AC & Polytechnic Harriers | Kingston | 11 May | | |
| | 11.58 | 5r1 | Grindan Abrahams (U14) | Kingston AC & Polytechnic Harriers | Kingston | 1 May | | |
| | 11.58/+2.7 w | 2s2 | Isaiah Easy-Riley | Croydon Harriers | Kingston | 11 May | | |
| | 11.72/+1.6 | 1h4 | Isaiah Easy-Riley | Croydon Harriers | Kingston | 11 May | | |
| | 11.75/0.8 | 1B | Ethan Foster | Guildford & Godalming AC | Guildford | 21 Jul | | |
| | 11.8 | 1ns | Micah Salmon | Croydon Harriers | Coulsdon | 28 Jul | | |
| | 11.85/+2.7 w | 3s2 | William Mayne | Guildford & Godalming AC | Kingston | 11 May | | |
| | 11.87/0.4 | 3 | Hamza Zidour | Herne Hill Harriers | Battersea Park | 8 Jun | | |
| | 11.9 | 2A | Cameron Atkins | Epsom & Ewell Harriers | Coulsdon | 28 Jul | | |
| | 11.97/+1.4 | 2h1 | William Mayne | Guildford & Godalming AC | Kingston | 11 May | | |
| | 11.97/1.5 | 2r2 | Tommaso Crosara (U14) | Hercules Wimbledon AC | Tooting Bec | 25 May | | |
| | 11.98/+2.7 w | 4s2 | Felix Liddle | Epsom & Ewell Harriers | Kingston | 11 May | | |
| | 12.0 | 1B | Euan Workman | Epsom & Ewell Harriers | Coulsdon | 28 Jul | | |
| | 12.03/2.5 w | 2r1 | Findlay Costello | Camberley & District AC | Eton | 14 Apr | | |
| | 12.04/+1.6 | 3h4 | Cameron Atkins | Epsom & Ewell Harriers | Kingston | 11 May | | |
| | 12.10/1.7 | 1B | Oskar Jones (U14) | Herne Hill Harriers | Mile End | 19 May | | |
| | 12.10/3.6 w | 2A | Eashan Patel | Walton AC | Crawley | 20 Apr | | |
| | 12.10/2.1 w | 3A | Oliver Elliott | Walton AC | Twickenham | 16 Jun | | |
| | 12.12/-0.9 | 1B | Anthony-Joe Olele | Walton AC | Kingston | 19 May | | |
| | 12.17/0.5 | 6r4 | Akhil Kandlagunta | Slough Junior AC | Watford | 26 Jun | | |
| | 12.2 | 2B | Jayden Kiyingi | Croydon Harriers | Mile End | 19 May | | |
| | 12.2 | 1B | Kalvyn Mills (U14) | Croydon Harriers | Dartford | 21 Jun | | |
| | 12.2 | 2ns | Paul Onasanwo | Croydon Harriers | Coulsdon | 28 Jul | | |
| | 12.2 | 3A | Samuel Valcourt | South London Harriers | Coulsdon | 28 Jul | | |
| | 12.2 | 4A | Soren Kerner | Hercules Wimbledon AC | Coulsdon | 28 Jul | | |
| | 12.21/0.6 | 2 | Sebastian Moss (U14) | Guildford & Godalming AC | Birmingham | 3 Jul | | |
| | 12.22/+1.4 | 3h1 | Arthur Ford | Guildford & Godalming AC | Kingston | 11 May | | |
| | 12.22/3.5 w | 2B | Aidan Searyoh | Croydon Harriers | Tooting Bec | 20 Apr | | |
| | 12.23/+1.9 | 2h2 | Felix Liddle | Epsom & Ewell Harriers | Kingston | 11 May | | |
| | 12.27/+2.7 w | 5s2 | Ifeanyi Davids (U14) | Croydon Harriers | Kingston | 11 May | | |
| | 12.3 | 3B | Jacob Salmen (U14) | South London Harriers | Coulsdon | 28 Jul | | |
| | 12.3 | ns | Dylan Glover | Hercules Wimbledon AC | Coulsdon | 28 Jul | | |
| | 12.33/1.5 | 1r15 | Euan Workman | Dorking Mole Valley AC | Eton | 23 Mar | | |
| | 12.34/0.6 | 2A5 | Joshua Woollett | Woking AC | Woking | 29 May | | |
| | 12.35/+1.4 | 4h1 | Joshua Liddle | Epsom & Ewell Harriers | Kingston | 11 May | | |
| | 12.35 | 1ns | Zac Elston (U14) | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 12.37/1.5 | 1nsA | Oliver Norris | Kingston AC & Polytechnic Harriers | Twickenham | 16 Jun | | |
| | 12.39/+1.6 | 4h4 | Ifeanyi Davids (U14) | Croydon Harriers | Kingston | 11 May | | |
| | 12.4 | 1A | Callum Dallaway | Dorking Mole Valley AC | Coulsdon | 28 Jul | | |
| | 12.45/+1.4 | 5h1 | Jacob Salmen (U14) | South London Harriers | Kingston | 11 May | | |
| | 12.45/-0.4 | 1nsA | Oliver Elliott | Walton AC | Kingston | 19 May | | |
| | 12.45 | 1A | Jakub Gawronski | Camberley & District AC | Aldershot | 21 Jul | | |
| | 12.45 | 1B | Isaac Moaby | Waverley AC | Aldershot | 21 Jul | | |
| | 12.46/+2.1 w | 5s1 | Tim Possadski | Kingston AC & Polytechnic Harriers | Kingston | 11 May | | |
| | 12.46 | 2ns | Vincent Lan (U14) | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 12.47/+0.5 | 1h3 | Tim Possadski | Kingston AC & Polytechnic Harriers | Kingston | 11 May | | |
| | 12.47/0.0 | 1A1 | Sean Okugbaye | Surrey Schools | Eton | 10 Jun | | |
| | 12.47/1.5 | 2nsA | Cillian Roohan | Kingston AC & Polytechnic Harriers | Twickenham | 16 Jun | | |
| | 12.47/2.5 w | 4r1 | Max Merriman | Guildford & Godalming AC | Eton | 14 Apr | | |
| | 12.48/-0.4 | 5O3 | Max Merriman | Guildford & Godalming AC | Eton | 17 Aug | | |
| | 12.48 | 2r3 | Caleb Leigh (U14) | Sutton & District AC | Tooting Bec | 1 Sep | | |
| | 12.50/0.7 | 3r3 | Brendan Nwosu | Herne Hill Harriers | Tooting Bec | 1 Sep | | |
| | 12.51 | 5A | Samuel Valcourt | South London Harriers | Kingston | 23 Jun | | |
| | 12.52 | 1nsA | Elisha Osunkunle | Herne Hill Harriers | Eltham | 20 Apr | | |
| | 12.52/+1.1 | 7h4 | Dylan Glover | Hercules Wimbledon AC | Kingston | 12 May | | |
| | 12.52/0.0 | 1B | Alexander Hallett | Herne Hill Harriers | Dartford | 21 Jul | | |
| | 12.53 | 1A | Lucas Newton | Waverley Harriers | Swindon | 9 Jun | | |
| | 12.55 | 3ns | Lukas Panayi | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 12.56 | | Paul Onasanwo | Croydon Harriers | Kingston | 23 Jun | | |
| | 12.57/0.2 | 3A | Eashan Patel | Walton AC | Kingston | 19 May | | |
| | 12.6 | 1nsA | Jayson Lumu | Croydon Harriers | Mile End | 19 May | | |
| | 12.6 | 3r4 | Toby Barr | Guildford & Godalming AC | Guildford | 9 Jun | | |
| | 12.6 | 5B | Joseph May (U14) | Guildford & Godalming AC | Coulsdon | 28 Jul | | |
| | 12.61/0.6 | 3B | Joseph May (U14) | Guildford & Godalming AC | Kingston | 23 Jun | | |
| | 12.62 | 5ns | Joseph Hart | South London Harriers | Kingston | 23 Jun | | |
| | 12.69/3.3 w | 1B | Sebastiano Beroldo (U14) | Kingston AC & Polytechnic Harriers | Crawley | 20 Apr | | |
| | 12.71/4.8 w | 4r1 | Nat Holden (U14) | Waverley AC | Portsmouth | 7 Apr | | |
| | 12.73 | 6ns | Sebastiano Beroldo (U14) | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 12.76/+1.6 | 5h4 | Nat Holden (U14) | Waverley AC | Kingston | 11 May | | |
| | 12.76 | ns | Lucas Rijnoudt | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 12.8 | ns | Kishon Cisse (U14) | Hercules Wimbledon AC | Coulsdon | 28 Jul | | |
| | 12.82/-1.5 | 2h1 | Edward Porter | Surrey Schools | Kingston | 8 Jun | | |
| | 12.84/-0.4 | 3nsA | Sebastiano Beroldo (U14) | Kingston AC & Polytechnic Harriers | Kingston | 19 May | | |
| | 12.86/0.2 | 5r4 | Zac Elston (U14) | Epsom & Ewell Harriers | Kingston | 1 May | | |
| | 12.87/+0.5 | 5h3 | Adrian Benjamin | Kingston AC & Polytechnic Harriers | Kingston | 11 May | | |
| | 12.88 | ns | Tom Wilson (U14) | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 12.9 | | Sam Jiang | Kingston AC & Polytechnic Harriers | Coulsdon | 28 Jul | | |
| | 12.9 | | Ross Dunipace (U14) | Hercules Wimbledon AC | Coulsdon | 28 Jul | | |
| | 12.9 | 2A | Mohamadou Diallo Bah (U14) | Sutton & District AC | Coulsdon | 28 Jul | | |
| | 12.94 | | Calvin Mitchell (U14) | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 12.95 | | Oliver Mealor | Hercules Wimbledon AC | Kingston | 23 Jun | | |
| | 12.96 | 2nsA | Toby Barr | Guildford & Godalming AC | Guildford | 21 Jul | | |
| | 12.96 | 4r3 | Caspian Holmes | Herne Hill Harriers | Tooting Bec | 1 Sep | | |
| | 12.96 | 4r3 | Caspian Holmes | Herne Hill Harriers | Tooting Bec | 1 Sep | | |
| | 13.00/1.9 | 1r5 | Sam Jiang | Kingston AC & Polytechnic Harriers | Tooting Bec | 25 May | | |