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| 200 Metres (Standard: 27.00) |
| | 22.43/2.0 | 2 | Piers Spencer-Simms (U14) | Blackheath & Bromley Harriers AC | Walton | 10 Aug | | |
| | 22.77/2.0 | 3 | Anjelho Macabee-Rose (U14) | Croydon Harriers | Walton | 10 Aug | | |
| | 23.22/0.3 | 2h3 | Grindan Abrahams (U14) | Kingston AC & Polytechnic Harriers | Birmingham | 13 Jul | | |
| | 23.70/0.4 | 6h1 | Tommaso Crosara (U14) | Hercules Wimbledon AC | Walton | 10 Aug | | |
| | 23.99/4.2 w | 1A | Eashan Patel | Walton AC | Twickenham | 16 Jun | | |
| | 24.02/0.4 | 3h1 | Tommaso Crosara (U14) | Hercules Wimbledon AC | Horspath | 8 Sep | | |
| | 24.3 | 3A | William Mayne | Guildford & Godalming AC | Southampton | 19 May | | |
| | 24.3 | 1B | Kalvyn Mills (U14) | Croydon Harriers | Coulsdon | 28 Jul | | |
| | 24.33/1.2 | 1A | Kalvyn Mills (U14) | Croydon Harriers | Mile End | 19 May | | |
| | 24.45/-0.9 | 2B | Isaiah Easy-Riley | Croydon Harriers | Dartford | 21 Jul | | |
| | 24.45/+2.7 w | 3h1 | Felix Liddle | Epsom & Ewell Harriers | Kingston | 12 May | | |
| | 24.5/+1.5 | 3 | Felix Liddle | Epsom & Ewell Harriers | Kingston | 12 May | | |
| | 24.60/3.2 w | 1r2 | Findlay Costello | Camberley & District AC | Eton | 14 Apr | | |
| | 24.69 | 4 | George Wells | Surrey Schools | Birmingham | 17 Jun | | |
| | 24.70/-2.2 | 2 | Joshua Woollett | Woking AC | Kingston | 8 Jun | | |
| | 24.7 | 3A | Samuel Valcourt | South London Harriers | Coulsdon | 28 Jul | | |
| | 24.73/-1.6 | 1h1 | William Mayne | Guildford & Godalming AC | Kingston | 8 Jun | | |
| | 24.80/-2.2 | 3 | Felix Liddle | Epsom & Ewell Harriers | Kingston | 8 Jun | | |
| | 24.82/0.4 | 5h3 | Euan Workman | Dorking Mole Valley AC | Walton | 10 Aug | | |
| | 24.83/0.2 | 1r3 | Oskar Jones (U14) | Herne Hill Harriers | Tooting Bec | 25 May | | |
| | 24.9 | 4A | Soren Kerner | Hercules Wimbledon AC | Coulsdon | 28 Jul | | |
| | 24.9/3.2 w | 5ns | Lucas Rijnoudt | Epsom & Ewell Harriers | Salisbury | 14 Jul | | |
| | 24.92 | 3 | Brendan Nwosu | Herne Hill Harriers | Battersea Park | 8 Jun | | |
| | 24.94/4.2 w | 2A | Vincent Lan (U14) | Kingston AC & Polytechnic Harriers | Twickenham | 16 Jun | | |
| | 24.99 | 3A | Samuel Valcourt | South London Harriers | Coulsdon | 28 Jul | | |
| | 25.03/1.5 | 2h1 | Elisha Osunkunle | Herne Hill Harriers | Battersea Park | 8 Jun | | |
| | 25.09/+1.7 | 7h1 | Dylan Glover | Hercules Wimbledon AC | Kingston | 11 May | | |
| | 25.11 | 1A | Akhil Kandlagunta | Slough Junior AC | Horspath | 23 Jun | | |
| | 25.15/0.2 | 1B | Alexander Hallett | Herne Hill Harriers | Dartford | 21 Jul | | |
| | 25.2 | 1A | Oliver Norris | Kingston AC & Polytechnic Harriers | Coulsdon | 28 Jul | | |
| | 25.28/1.7 | 5h2 | Oliver Mealor | Hercules Wimbledon AC | Walton | 10 Aug | | |
| | 25.29/-0.3 | 1A | Eashan Patel | Walton AC | Kingston | 19 May | | |
| | 25.3 | 1A | Joseph May (U14) | Guildford & Godalming AC | Southampton | 19 May | | |
| | 25.38 | ns | Vincent Lan (U14) | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 25.41/0.4 | 2B | Joseph May (U14) | Guildford & Godalming AC | Guildford | 21 Jul | | |
| | 25.42 | 5 | Amaru Goppy | Herne Hill Harriers | Battersea Park | 8 Jun | | |
| | 25.42/3.1 w | 1h1 | Sebastiano Beroldo (U14) | Kingston AC & Polytechnic Harriers | Stoke | 6 Jul | | |
| | 25.46 | 2ns | Zac Elston (U14) | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 25.52 | 1B | Oliver Norris | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 25.53 | ns | Lucas Rijnoudt | Epsom & Ewell Harriers | Kingston | | | |
| | 25.56 | 3ns | Lukas Panayi | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 25.61 | 4A | Joshua Liddle | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 25.62/0.2 | 2r3 | Thomas Whorton | Hercules Wimbledon AC | Tooting Bec | 25 May | | |
| | 25.64 | 2A | Cem Portsmouth | Waverley AC | Horspath | 23 Jun | | |
| | 25.7 | 2r1 | Toby Barr | Guildford & Godalming AC | Guildford | 9 Jun | | |
| | 25.74/+2.7 w | 4h1 | Ifeanyi Davids (U14) | Croydon Harriers | Kingston | 12 May | | |
| | 25.75 | ns | Sebastiano Beroldo (U14) | Kingston AC & Polytechnic Harriers | Kingston | 23 Jun | | |
| | 25.75/1.7 | 6h2 | Ross Dunipace (U14) | Hercules Wimbledon AC | Walton | 10 Aug | | |
| | 25.79/-0.7 | 4r3 | Max Merriman | Guildford & Godalming AC | Crawley | 1 Apr | | |
| | 25.8 | ns | Leo Shaw (U14) | Epsom & Ewell Harriers | Coulsdon | 28 Jul | | |
| | 25.84 | ns | Joseph Hart | South London Harriers | Kingston | 23 Jun | | |
| | 25.85 | 6ns | Soren Bernd | Hercules Wimbledon AC | Kingston | 23 Jul | | |
| | 25.87/+2.7 w | 2B | Adrian Benjamin | Kingston AC & Polytechnic Harriers | Twickenham | 16 Jun | | |
| | 25.94/-0.9 | 2A1 | Leo Shaw (U14) | Epsom & Ewell Harriers | Eton | 10 Jun | | |
| | 26.06/+2.7 w | 5h1 | Sebastian Moss (U14) | Guildford & Godalming AC | Kingston | 12 May | | |
| | 26.12 | 2A | Jakub Gawronski | Camberley & District AC | Aldershot | 21 Jul | | |
| | 26.19/+1.5 | 6A | Sebastian Moss (U14) | Guildford & Godalming AC | Kingston | 23 Jun | | |
| | 26.21/0.2 | 1B | David Omosuyi | Herne Hill Harriers | Mile End | 19 May | | |
| | 26.27 | ns | Leo Linton | South London Harriers | Kingston | 23 Jun | | |
| | 26.28/1.2 | 2B | Ifeanyi Davids (U14) | Croydon Harriers | Mile End | 19 May | | |
| | 26.3 | 2A | Mohamadou Diallo Bah (U14) | Sutton & District AC | Coulsdon | 28 Jul | | |
| | 26.4/+1.5 | 7 | Alex Hughes (U14) | Hercules Wimbledon AC | Kingston | 12 May | | |
| | 26.4 | | Daniel Baker (U14) | Guildford & Godalming AC | Coulsdon | 28 Jul | | |
| | 26.49/0.5 | 3h2 | Alexander Hughes | Hercules Wimbledon AC | Kingston | 12 May | | |
| | 26.50/0.5 | 4r5 | Caleb Leigh (U14) | Sutton & District AC | Tooting Bec | 1 Sep | | |
| | 26.53/-0.3 | 4A | Adrian Benjamin | Kingston AC & Polytechnic Harriers | Kingston | 19 May | | |
| | 26.56 | | Tom Wilson (U14) | Epsom & Ewell Harriers | Kingston | 23 Jun | | |
| | 26.6 | 1ns | Jacob Double (U14) | Kingston AC & Polytechnic Harriers | Ewell | 7 Apr | | |
| | 26.6 | | Sam Jiang | Kingston AC & Polytechnic Harriers | Coulsdon | 28 Jul | | |
| | 26.64 | 3h2 | Kobi Abuchi | Surrey Schools | Birmingham | 3 Jul | | |
| | 26.71/2.4 w | 2B | Bvunzai Mtombeni | Herne Hill Harriers | Eltham | 20 Apr | | |
| | 26.9 | | David Obafemi (U14) | Sutton & District AC | Coulsdon | 28 Jul | | |
| | 26.95 | | Samuel Odewale (U14) | South London Harriers | Kingston | 23 Jun | | |
| | 26.95/2.3 w | 2B | Jayden Kiyingi | Croydon Harriers | Tooting Bec | 20 Apr | | |
| | 26.96/0.2 | 4r4 | Mohamadou Diallo Bah (U14) | Sutton & District AC | Tooting Bec | 1 Sep | | |
| | 26.97/0.3 | 5r4 | Sam Jiang | Kingston AC & Polytechnic Harriers | Tooting Bec | 25 May | | |