| 2025 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 53.5 | | | | 4 | | | | Neath | UK Youth Development League Lower - Midlands SW A | 21 Jun 25 |
| 4x100 | 54.3 | | | | 1 | | | | Hereford | UK Youth Development League Lower - Midland South West 1A | 1 Jun 25 |
| 4x300 | 2:50.8 | | | | 1 | | | | Neath | UK Youth Development League Lower - Midlands SW A | 21 Jun 25 |
| 4x300 | 2:52.8 | | | | 1 | | | | Hereford | UK Youth Development League Lower - Midland South West 1A | 1 Jun 25 |
| 4x300 | 2:54.2 | | | | 1 | | | | Aberdare | UK Youth Development League Lower - Midland South West 1A | 3 May 25 |
| 2024 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 54.49 | | | | 4 | | | | Yate | UK Youth Development League Lower - Midland S/W A | 19 May 24 |
| 4x100 | 55.3 | | | | 4 | | | | Aberdare | UK Youth Development League Lower - Midlands South/West A | 23 Jun 24 |
| 4x100 | 56.1 | | | | 4 | | | | Aberdare | UK Youth Development League Lower - Midland S/W A | 20 Apr 24 |
| 4x300 | 3:05.3 | | | | 3 | | | | Aberdare | UK Youth Development League Lower - Midlands South/West A | 23 Jun 24 |
| 4x300 | 3:10.10 | | | | 1 | | | | Yate | UK Youth Development League Lower - Midland S/W A | 19 May 24 |
| 4x300 | 3:13.4 | | | | 3 | | | | Aberdare | UK Youth Development League Lower - Midland S/W A | 20 Apr 24 |
| 2023 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 51.46 | | | | 1 | | | | Yate | UK Youth Development League Lower - Midland South/West A | 3 Jun 23 |
| 4x100 | 52.75 | | | | 3 | | | | Aberdare | Inter Regional T&F Championships | 16 Jul 23 |
| 4x100 | 54.80 | | | | 4 | | | | Yate | UK Youth Development League South West Promotion Match | 22 Jul 23 |
| 4x100 | 57.3 | | | | 4 | | | | Gloucester | UK Youth Development League Lower - Midland South/West A | 7 May 23 |
| 4x100 | 57.4 | | | | 2 | | | | Neath | UK Youth Development League Lower - Midland South/West A | 8 Jul 23 |
| 4x300 | 2:44.0 | | | | 1 | | | | Gloucester | UK Youth Development League Lower - Midland South/West A | 7 May 23 |
| 4x300 | 2:45.6 | | | | 1 | | | | Neath | UK Youth Development League Lower - Midland South/West A | 8 Jul 23 |
| 2022 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 52.77 | | | | 1 | | | | Yate | UK Youth Development League Lower Midlands South West Division B | 8 May 22 |
| 4x100 | 52.8 | | | | 1 | | | | Hereford | UK Youth Development League Lower Midlands South/West Division B | 21 May 22 |
| 4x100 | 56.23 | | | | 1 | | | | Yate | UK Youth Development League Lower Midlands South West Division B | 3 Jul 22 |
| 4x300 | 2:58.31 | | | | 1 | | | | Yate | UK Youth Development League Lower Midlands South West Division B | 8 May 22 |
| 2021 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 49.22 | | | | 1 | | | | Newport | Youth Development League Lower Midlands South/West B | 4 Sep 21 |
| 2019 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 52.15 | | | | 2 | | | | Swindon | UK Youth Development U13/U15 League Division Midland SW 1A | 18 May 19 |
| 4x100 | 55.5 | | | | 2 | | | | Braunton | UK Youth Development U13/U15 League Division Midland SW 1A | 27 Apr 19 |
| 4x100 | 55.6 | | | | 6 | | | | Gloucester | UK Youth Development U13/U15 League Division Midland SW 1A | 23 Jun 19 |
| 2018 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 49.3 | | | | 1 | | | | Worcester | UK Youth Development U13/U15 League Division Midland SW 1A | 19 May 18 |
| 4x100 | 49.5 | | | | 1 | | | | Newport | UK Youth Development U13/U15 League Division Midland SW 1A | 17 Jun 18 |
| 4x100 | 50.44 | | | | 4 | | | | Brecon | Welsh Inter Regional Championships | 25 Aug 18 |
| 4x100 | 55.4 | | | | 2 | | | | Braunton | UK Youth Development U13/U15 League Division Midland SW 1A | 21 Apr 18 |
| 4x300 | 2:58.4 | | | | 1 | | | | Newport | UK Youth Development U13/U15 League Division Midland SW 1A | 17 Jun 18 |
| 4x300 | 2:58.9 | | | | 1 | | | | Worcester | UK Youth Development U13/U15 League Division Midland SW 1A | 19 May 18 |
| 4x300 | 3:04.5 | | | | 2 | | | | Braunton | UK Youth Development U13/U15 League Division Midland SW 1A | 21 Apr 18 |
| 2017 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 50.89 | | | | 1 | | | | Newport | UK Youth Development U13/U15 League Division Midland South/West 1A | 22 Apr 17 |
| 4x100 | 52.3 | | | | 1 | | | | Swindon | UK Youth Development U13/U15 League Division Midland South/West 1A | 18 Jun 17 |
| 4x100 | 53.7 | | | | 5 | | | | Swindon | UK Youth Development U13/U15 League Midlands South/West Promotion Match | 15 Jul 17 |
| 4x300 | 3:06.4 | | | | 4 | | | | Swindon | UK Youth Development U13/U15 League Midlands South/West Promotion Match | 15 Jul 17 |
| 4x300 | 3:08.9 | | | | 2 | | | | Gloucester | UK Youth Development U13/U15 League Division Midland South/West 1A | 20 May 17 |
| 4x300 | 3:11.1 | | | | 3 | | | | Swindon | UK Youth Development U13/U15 League Division Midland South/West 1A | 18 Jun 17 |
| 2016 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x300 | 2:56.41 | | | | 3 | | | | Swansea | UK Youth Development U13/U15 League Division Midland Premier South/West | 21 May 16 |
| 4x300 | 2:58.13 | | | | 3 | | | | Swansea | UK Youth Development U13/U15 League Division Midland Premier South/West | 19 Jun 16 |
| 4x300 | 3:06.2 | | | | 5 | | | | Newport | UK Youth Development U13/U15 League Division Midland Premier South/West | 23 Apr 16 |
| 2015 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 51.4 | | | | 3 | | | | Yate | UK Youth Development U13/U15 League Division Midland South/West 1 | 21 Jun 15 |
| 4x100 | 52.2 | | | | 2 | | | | Braunton | UK Youth Development U13/U15 League Division Midland South/West 1 | 30 May 15 |
| 4x100 | 52.46 | | | | 2 | | | | Cardiff | UK Youth Development U13/U15 League Division Midland South/West 1 | 2 May 15 |
| 4x100 | 52.7 | | | | 2 | | | | Yeovil | UK Youth Development U13/U15 League Division Midland South/West 1 | 18 Jul 15 |
| 4x300 | 2:59.0 | | | | 2 | | | | Yate | UK Youth Development U13/U15 League Division Midland South/West 1 | 21 Jun 15 |
| 4x300 | 3:03.1 | | | | 4 | | | | Braunton | UK Youth Development U13/U15 League Division Midland South/West 1 | 30 May 15 |
| 4x300 | 3:03.84 | | | | 2 | | | | Cardiff | UK Youth Development U13/U15 League Division Midland South/West 1 | 2 May 15 |
| 2014 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 51.5 | | | | 2 | | | | Swansea | UK Youth Development U13/U15 League Division Midland West 2a | 19 Jul 14 |
| 4x300 | 2:59.4 | | | | 1 | | | | Swansea | UK Youth Development U13/U15 League Division Midland West 2a | 19 Jul 14 |
| 2008 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 47.19 | | | | 1 | | | | Brecon | Welsh Inter Regional Championships | 31 Aug 08 |
| 2007 U15 South Wales |
| Event | Perf | | | | Pos | | | | Venue | Meeting | Date |
| 4x100 | 47.93 | | | | 1 | | | | Connah's Quay | Welsh Inter Regional Championships | 26 Aug 07 |