| 2024 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 51.12 | | | | 4 | | | | Guildford | UK Youth Development League Lower - Southern 1A | 21 Jul 24 |
| 4x100 | 53.2 | | | | 3 | | | | Portsmouth | UK Youth Development League Lower - Southern 1A | 16 Jun 24 |
| 4x100 | 54.1 | | | | 3 | | | | Sandown | Wessex Young Athletes' League | 7 Jul 24 |
| 4x100 | 54.6 | | | | 4 | | | | Bournemouth | UK Youth Development League Lower - Southern 1A | 20 Apr 24 |
| 4x100 | 54.7 | | | | 6 | | | | Southampton | UK Youth Development League Lower - Southern 1A | 19 May 24 |
| 4x100 | 54.8 | | | | 1 | | | | Southampton | Wessex Young Athletes' League | 28 Apr 24 |
| 4x100 | 55.5 | | | | 3 | | | | Swindon | Wessex Young Athletes' League | 30 Jun 24 |
| 4x300 | 2:57.5 | | | | 3 | | | | Bournemouth | UK Youth Development League Lower - Southern 1A | 20 Apr 24 |
| 4x300 | 3:02.59 | | | | 4 | | | | Guildford | UK Youth Development League Lower - Southern 1A | 21 Jul 24 |
| 4x300 | 3:11.1 | | | | 4 | | | | Southampton | UK Youth Development League Lower - Southern 1A | 19 May 24 |
| 4x300 | 3:15.3 | | | | 4 | | | | Portsmouth | UK Youth Development League Lower - Southern 1A | 16 Jun 24 |
| 2023 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 52.4 | | | | 4 | | | | Portsmouth | UK Youth Development League Lower - Southern 2A | 23 Jul 23 |
| 4x100 | 55.94 | | | | 3 | | | | Woking | UK Youth Development League Lower - Southern 2A | 7 May 23 |
| 2022 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 54.2 | | | | 4 | h1 | | | Southampton | Hampshire Schools AA U13/14 Championships | 13 Jul 22 |
| 2019 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 48.4 | | | | 1 | | | | Brighton | UK Youth Development U13/U15 League Division South Premier 2 | 23 Jun 19 |
| 4x100 | 49.58 | | | | 2 | | | | Bracknell | UK Youth Development U13/U15 League Division South Premier 2 | 18 May 19 |
| 4x100 | 50.1 | | | | 1 | | | | Guildford | Wessex Young Athletes' League | 9 Jun 19 |
| 4x100 | 50.4 | | | | 1 | | | | Bournemouth | Wessex Young Athletes' League | 14 Jul 19 |
| 4x100 | 52.6 | | | | 3 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 2 | 27 Apr 19 |
| 4x100 | 52.6 | | | | 1 | ns | | | Southampton | Wessex Young Athletes' League | 2 Jun 19 |
| 4x100 | 52.64 | | | | 2 | | | | Swindon | Wessex Young Athletes' League | 7 Apr 19 |
| 4x100 | 55.4 | | | | 3 | | | | Southampton | Wessex Young Athletes' League | 2 Jun 19 |
| 4x300 | 2:54.6 | | | | 3 | | | | Brighton | UK Youth Development U13/U15 League Division South Premier 2 | 23 Jun 19 |
| 4x300 | 2:56.3 | | | | 3 | | | | Guildford | UK Youth Development U13/U15 League Division South Premier 2 | 20 Jul 19 |
| 4x300 | 3:04.0 | | | | 4 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 2 | 27 Apr 19 |
| 2018 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 49.22 | | | | 3 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 19 May 18 |
| 4x100 | 51.04 | | | | 5 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 17 Jun 18 |
| 4x100 | 51.2 | | | | 5 | | | | Hornchurch | UK Youth Development U13/U15 League Division South Premier 1 | 21 Jul 18 |
| 4x100 | 54.3 | | | | 5 | | | | Swindon | Wessex Young Athletes' League | 24 Jun 18 |
| 4x100 | 54.5 | | | | 4 | | | | Woking | Wessex Young Athletes' League | 10 Jun 18 |
| 4x100 | 54.76 | | | | 6 | | | | Bracknell | UK Youth Development U13/U15 League Division South Premier 1 | 21 Apr 18 |
| 4x100 | 56.3 | | | | 2 | ns | | | Woking | Wessex Young Athletes' League | 10 Jun 18 |
| 4x300 | 2:54.27 | | | | 3 | | | | Bracknell | UK Youth Development U13/U15 League Division South Premier 1 | 21 Apr 18 |
| 4x300 | 2:54.58 | | | | 4 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 17 Jun 18 |
| 4x300 | 2:58.34 | | | | 6 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 19 May 18 |
| 4x300 | 3:00.4 | | | | 5 | | | | Hornchurch | UK Youth Development U13/U15 League Division South Premier 1 | 21 Jul 18 |
| 2017 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 46.04 | | | | 1 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 15 Jul 17 |
| 4x100 | 47.10 | | | | 1 | | | | Eton | UK Youth Development U13/U15 League Division South Premier 1 | 18 Jun 17 |
| 4x100 | 47.48 | | | | 3 | | | | Birmingham | UK Youth Development U13/U15 League National Final | 2 Sep 17 |
| 4x100 | 48.0 | | | | 1 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 20 May 17 |
| 4x100 | 48.0 | | | | 1 | | | | Horspath | Wessex Young Athletes' League | 2 Jul 17 |
| 4x100 | 48.34 | | | | 1 | | | | Bracknell | UK Youth Development U13/U15 League Division South Premier 1 | 22 Apr 17 |
| 4x100 | 50.3 | | | | 1 | | | | Swindon | Wessex Young Athletes' League | 4 Jun 17 |
| 4x100 | 50.7 | | | | 1 | | | | Sandown | Wessex Young Athletes' League | 9 Jul 17 |
| 4x100 | 51.0 | | | | 2 | | | | Southampton | Wessex Young Athletes' League | 9 Apr 17 |
| 4x100 | 52.3 | | | | 1 | ns | | | Southampton | Wessex Young Athletes' League | 9 Apr 17 |
| 4x300 | 2:34.87 | | | | 2 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 15 Jul 17 |
| 4x300 | 2:37.06 | | | | 2 | | | | Birmingham | UK Youth Development U13/U15 League National Final | 2 Sep 17 |
| 4x300 | 2:39.96 | | | | 1 | | | | Eton | UK Youth Development U13/U15 League Division South Premier 1 | 18 Jun 17 |
| 4x300 | 2:40.6 | | | | 1 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 20 May 17 |
| 4x300 | 2:42.32 | | | | 1 | | | | Bracknell | UK Youth Development U13/U15 League Division South Premier 1 | 22 Apr 17 |
| 2016 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 47.7 | | | | 2 | | | | Eton | UK Youth Development U13/U15 League Division South Premier 1 | 16 Jul 16 |
| 4x100 | 48.24 | | | | 4 | | | | Bedford | UK Youth Development U13/U15 League National Final | 3 Sep 16 |
| 4x100 | 48.7 | | | | 2 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 19 Jun 16 |
| 4x100 | 50.3 | | | | 3 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 21 May 16 |
| 4x100 | 50.4 | | | | 3 | | | | Aldershot | Wessex Young Athletes' League | 10 Jul 16 |
| 4x100 | 50.6 | | | | 6 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 23 Apr 16 |
| 4x100 | 50.8 | | | | 1 | | | | Swindon | Wessex Young Athletes' League | 3 Jul 16 |
| 4x100 | 52.1 | | | | 2 | | | | Southampton | Wessex Young Athletes' League | 10 Apr 16 |
| 4x100 | 53.0 | | | | 1 | | | | Bournemouth | Wessex Young Athletes' League | 12 Jun 16 |
| 4x100 | 53.2 | | | | 1 | ns | | | Southampton | Wessex Young Athletes' League | 10 Apr 16 |
| 4x300 | 2:39.7 | | | | 3 | | | | Eton | UK Youth Development U13/U15 League Division South Premier 1 | 16 Jul 16 |
| 4x300 | 2:40.0 | | | | 3 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 19 Jun 16 |
| 4x300 | 2:42.90 | | | | 5 | | | | Bedford | UK Youth Development U13/U15 League National Final | 3 Sep 16 |
| 4x300 | 2:43.9 | | | | 1 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 23 Apr 16 |
| 4x300 | 2:43.9 | | | | 2 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 21 May 16 |
| 2015 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 48.26 | | | | 2 | | | | Croydon | UK Youth Development U13/U15 League Division South Premier 1 | 18 Jul 15 |
| 4x100 | 49.80 | | | | 7 | | | | Birmingham | UK Youth Development U13/U15 League Final & Walks Invitation | 5 Sep 15 |
| 4x100 | 50.7 | | | | 3 | | | | Portsmouth | Wessex Young Athletes' League | 14 Jun 15 |
| 4x100 | 51.3 | | | | 2 | | | | Poole | Wessex Young Athletes' League | 12 Jul 15 |
| 4x100 | 55.0 | | | | 2 | | | | Sandown | Wessex Young Athletes' League | 26 Apr 15 |
| 4x100 | 55.6 | | | | 6 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 30 May 15 |
| 4x100 | 56.5 | | | | 5 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 21 Jun 15 |
| 4x100 | 56.6 | | | | 5 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 2 May 15 |
| 4x100 | 58.2 | | | | 2 | | | | Bournemouth | Wessex Young Athletes' League | 28 Jun 15 |
| 4x300 | 2:42.00 | | | | 2 | | | | Birmingham | UK Youth Development U13/U15 League Final & Walks Invitation | 5 Sep 15 |
| 4x300 | 2:48.0 | | | | 2 | | | | Reading | UK Youth Development U13/U15 League Division South Premier 1 | 21 Jun 15 |
| 4x300 | 2:52.5 | | | | 2 | | | | Southampton | UK Youth Development U13/U15 League Division South Premier 1 | 2 May 15 |
| 4x300 | 2:54.39 | | | | 5 | | | | Croydon | UK Youth Development U13/U15 League Division South Premier 1 | 18 Jul 15 |
| 4x300 | 2:58.1 | | | | 5 | | | | Bromley | UK Youth Development U13/U15 League Division South Premier 1 | 30 May 15 |
| 2014 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 46.6 | | | | 1 | | | | Tooting Bec | UK Youth Development U13/U15 League Division Southern Premier 1 | 19 Jul 14 |
| 4x100 | 47.6 | | | | 2 | | | | Woking | Wessex Young Athletes' League | 6 Jul 14 |
| 4x100 | 47.8 | | | | 1 | | | | Bournemouth | Wessex Young Athletes' League | 8 Jun 14 |
| 4x100 | 47.9 | | | | 3 | | | | Reading | UK Youth Development U13/U15 League Division Southern Premier 1 | 31 May 14 |
| 4x100 | 48.10 | | | | 6 | | | | Birmingham | UK Youth Development U13/U15 League National Final | 6 Sep 14 |
| 4x100 | 48.1 | | | | 3 | | | | Bromley | UK Youth Development U13/U15 League Division Southern Premier 1 | 22 Jun 14 |
| 4x100 | 48.9 | | | | 1 | | | | Southampton | Wessex Young Athletes' League | 13 Apr 14 |
| 4x100 | 50.4 | | | | 4 | | | | Southampton | UK Youth Development U13/U15 League Division Southern Premier 1 | 3 May 14 |
| 4x100 | 51.7 | | | | 1 | ns | | | Woking | Wessex Young Athletes' League | 6 Jul 14 |
| 4x100 | 52.0 | | | | 2 | | | | Sandown | Wessex Young Athletes' League | 20 Jul 14 |
| 4x300 | 2:38.16 | | | | 3 | | | | Birmingham | UK Youth Development U13/U15 League National Final | 6 Sep 14 |
| 4x300 | 2:41.6 | | | | 1 | | | | Tooting Bec | UK Youth Development U13/U15 League Division Southern Premier 1 | 19 Jul 14 |
| 4x300 | 2:43.8 | | | | 1 | | | | Reading | UK Youth Development U13/U15 League Division Southern Premier 1 | 31 May 14 |
| 4x300 | 2:45.2 | | | | 3 | | | | Bromley | UK Youth Development U13/U15 League Division Southern Premier 1 | 22 Jun 14 |
| 4x300 | 2:52.3 | | | | 2 | | | | Southampton | UK Youth Development U13/U15 League Division Southern Premier 1 | 3 May 14 |
| 2013 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 47.7 | | | | 2 | | | | Carshalton | UK Youth Development U13/U15 League Division Southern Premier 2 | 13 Jul 13 |
| 4x100 | 48.8 | | | | 2 | | | | Tidworth | Wessex Young Athletes' League | 21 Jul 13 |
| 4x100 | 49.3 | | | | 1 | | | | Sandown | Wessex Young Athletes' League | 7 Jul 13 |
| 4x100 | 49.9 | | | | 3 | | | | Southampton | UK Youth Development U13/U15 League Division Southern Premier 2 | 22 Jun 13 |
| 4x100 | 50.3 | | | | 1 | | | | Portsmouth | Wessex Young Athletes' League | 16 Jun 13 |
| 4x100 | 50.64 | | | | 3 | | | | Croydon | UK Youth Development U13/U15 League Division Southern Premier 2 | 4 May 13 |
| 4x100 | 50.9 | | | | 4 | | | | Winchester | UK Youth Development U13/U15 League Division Southern Premier 2 | 1 Jun 13 |
| 4x100 | 53.1 | | | | 2 | | | | Southampton | Wessex Young Athletes' League | 21 Apr 13 |
| 4x300 | 2:48.8 | | | | 2 | | | | Carshalton | UK Youth Development U13/U15 League Division Southern Premier 2 | 13 Jul 13 |
| 4x300 | 2:49.7 | | | | 2 | | | | Southampton | UK Youth Development U13/U15 League Division Southern Premier 2 | 22 Jun 13 |
| 4x300 | 2:50.5 | | | | 3 | | | | Winchester | UK Youth Development U13/U15 League Division Southern Premier 2 | 1 Jun 13 |
| 2012 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 49.7 | | | | 2 | | | | Winchester | McCain Young Athletes' League Division Southern Premier S | 17 Jun 12 |
| 4x100 | 51.2 | | | | 3 | | | | Bracknell | McCain Young Athletes' League Division Southern Premier S | 6 May 12 |
| 4x100 | 51.88 | | | | 5 | | | | Hendon | McCain Young Athletes' League Southern Final | 29 Jul 12 |
| 4x100 | 52.1 | | | | 4 | | | | Reading | McCain Young Athletes' League Division Southern Premier S | 20 May 12 |
| 4x100 | 53.2 | | | | 1 | | | | Woking | Wessex Young Athletes' League | 15 Apr 12 |
| 4x100 | 53.4 | | | | 1 | | | | Bournemouth | Wessex Young Athletes' League | 10 Jun 12 |
| 4x100 | 53.9 | | | | 2 | | | | Poole | Wessex Young Athletes' League | 1 Jul 12 |
| 4x100 | 55.9 | | | | 2 | | | | Bournemouth | Wessex Young Athletes' League | 22 Jul 12 |
| 4x300 | 2:51.0 | | | | 2 | | | | Winchester | McCain Young Athletes' League Division Southern Premier S | 17 Jun 12 |
| 4x300 | 2:51.1 | | | | 1 | | | | Reading | McCain Young Athletes' League Division Southern Premier S | 20 May 12 |
| 4x300 | 3:01.9 | | | | 7 | | | | Hendon | McCain Young Athletes' League Southern Final | 29 Jul 12 |
| 4x300 | 3:06.7 | | | | 2 | | | | Bracknell | McCain Young Athletes' League Division Southern Premier S | 6 May 12 |
| 2011 U15 Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 49.4 | | | | 1 | B | | | Winchester | Wessex Young Athletes' League | 3 Jul 11 |
| 4x100 | 49.5 | | | | 2 | | | | Guildford | Wessex Young Athletes' League | 24 Jul 11 |
| 4x100 | 49.92 | | | | 2 | | | | Hendon | McCain Young Athletes League Southern Premier W Division | 19 Jun 11 |
| 4x100 | 51.6 | | | | 3 | | | | Reading | McCain Young Athletes League Southern Premier W Division Match 2 | 8 May 11 |
| 4x100 | 52.8 | | | | 3 | | | | Bracknell | McCain Young Athletes League Southern Premier W Division | 22 May 11 |
| 4x100 | 52.9 | | | | 1 | | | | Hillingdon | McCain Young Athletes League Southern Premier W Division | 5 Jun 11 |
| 4x400 | 4:06.8 | | | | 1 | | | | Hillingdon | McCain Young Athletes League Southern Premier W Division | 5 Jun 11 |
| 4x400 | 4:13.6 | | | | 3 | | | | Bracknell | McCain Young Athletes League Southern Premier W Division | 22 May 11 |
| 4x400 | 4:15.19 | | | | 2 | | | | Hendon | McCain Young Athletes League Southern Premier W Division | 19 Jun 11 |
| 4x400 | 4:23.2 | | | | 2 | | | | Reading | McCain Young Athletes League Southern Premier W Division Match 2 | 8 May 11 |
| 2010 U15 Team Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 47.65 | | | | 2 | | | | Hendon | McCain UK Young Athletes League Southern Final | 1 Aug 10 |
| 4x100 | 47.9 | | | | 1 | A | | | Harrow | McCain UK Young Athletes League Southern Premier W - Match A | 20 Jun 10 |
| 4x100 | 48.22 | | | | 2 | | | | Hendon | McCain UK Young Athletes League Southern Premier W - Match A | 18 Jul 10 |
| 4x100 | 48.8 | | | | 1 | | | | Winchester | Wessex Young Athletes' League | 25 Jul 10 |
| 4x100 | 50.3 | | | | 1 | | | | Eton | McCain UK Young Athletes League Southern Premier W | 2 May 10 |
| 4x100 | 51.5 | | | | 2 | | | | Bracknell | McCain UK Young Athletes League Southern Premier W | 16 May 10 |
| 4x400 | 3:41.14 | | | | 2 | | | | Hendon | McCain UK Young Athletes League Southern Final | 1 Aug 10 |
| 4x400 | 3:47.7 | | | | 1 | A | | | Harrow | McCain UK Young Athletes League Southern Premier W - Match A | 20 Jun 10 |
| 4x400 | 3:48.80 | | | | 1 | | | | Hendon | McCain UK Young Athletes League Southern Premier W - Match A | 18 Jul 10 |
| 4x400 | 3:55.7 | | | | 1 | | | | Eton | McCain UK Young Athletes League Southern Premier W | 2 May 10 |
| 4x400 | 3:56.7 | | | | 1 | | | | Bracknell | McCain UK Young Athletes League Southern Premier W | 16 May 10 |
| 2009 U15 Team Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| RELAY | 42:25 | | | | 15 | | | | Aldershot | Southern Counties Young Athletes' Relays | 26 Sep 09 |
| RELAY | 47:32 | | | | 35 | | | | Aldershot | Southern Counties Young Athletes' Relays | 26 Sep 09 |
| 4x100 | 48.5 | | | | 2 | | | | Bromley | McCain UK Young Athletes League Southern Premier | 21 Jun 09 |
| 4x100 | 48.7 | | | | 1 | | | | Andover | Wessex Young Athletes' League | 26 Jul 09 |
| 4x100 | 49.6 | | | | 1 | | | | Eton | Wessex Young Athletes' League | 7 Jun 09 |
| 4x100 | 50.2 | | | | 1 | | | | Southampton | McCain UK Young Athletes League Southern Premier | 3 May 09 |
| 4x100 | 51.2 | | | | 4 | | | | Harrow | McCain UK Young Athletes League Southern Premier | 31 May 09 |
| 4x400 | 3:47.6 | | | | 1 | | | | Bromley | McCain UK Young Athletes League Southern Premier | 21 Jun 09 |
| 4x400 | 3:50.60 | | | | 1 | | | | Croydon | McCain UK Young Athletes League Southern Premier | 19 Jul 09 |
| 4x400 | 3:56.8 | | | | 1 | | | | Harrow | McCain UK Young Athletes League Southern Premier | 31 May 09 |
| 4x400 | 4:00.7 | | | | 1 | | | | Southampton | McCain UK Young Athletes League Southern Premier | 3 May 09 |
| 2007 U15 Team Southampton |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x400 | 3:57.3 | | | | 1 | | | | Southampton | UKA Young Athletes League Southern 1W | 20 May 07 |
| 4x400 | 3:58.3 | | | | 1 | | | | Southampton | UKA Young Athletes League Southern 1 West | 22 Jul 07 |