Male:
| Age: | Time: | Date: | Who: |
| 8 | 2:00.70 – SC | 18 / 06 / 2022 | Bobby Cooper |
| 9 | 1:16.87 – SC | 12 / 07 / 2009 | William Gayne |
| 10 | 1:07.30 – SC 1:16.04 – LC | 01 / 06 / 2010 18 / 01 / 2020 | William Gayne Jack Welbourne |
| 11 | 1:01.70 – SC 1:15.64 – LC | 01 / 06 / 2011 22 / 02 / 2025 | William Gayne Joe Goncalves |
| 12 | 0:59.30 – SC 1:06.54 – LC | 01 / 06 / 2012 19 / 01 / 2019 | William Gayne Reuben Fox |
| 13 | 0:56.97 – SC 1:00.11 – LC | 01 / 06 / 2013 03 / 02 / 2018 | William Gayne Kyle Merryweather |
| 14 | 0:53.95 – SC 0:59.53 – LC | 15 / 03 / 2014 19 / 01 / 2019 | William Gayne Kyle Merryweather |
| 15 | 0:54.23 – SC 0:56.54 – LC | 01 / 12 / 2014 18 / 01 / 2020 | William Gayne Kyle Merryweather |
| 16 | 0:52.80 – SC 0:54.31 – LC | 01 / 06 / 2016 16 / 01 / 2016 | William Gayne William Gayne |
| 17 | 0:53.81 – SC 0:55.74 – LC | 01 / 12 / 2016 07 / 05 / 2023 | William Gayne Kyle Merryweather |
| 18 | 0:54.43 – SC 0:56.30 – LC | 05 / 11 / 2022 29 / 04 / 2023 | Kyle Merryweather Kyle Merryweather |
| 19 – 24 | 0:55.29 – SC 0:56.09 – LC | 22 / 06 / 2024 24 / 02 / 2024 | Kyle Merryweather Kyle Merryweather |
| 25+ | 0:55.39 – SC 0:55.37 – LC | 28 / 10 / 2016 13 / 06 / 2025 | Michael Kerslake William Gayne |
Female:
| Age: | Time: | Date: | Who: |
| 8 | 1:47.27 – SC | 02 / 10 / 2025 | Holly Westwell |
| 9 | 1:17.64 – SC | 15 / 07 / 2017 | Eve Turnbull |
| 10 | 1:09.47 – SC 1:13.82 – LC | 14 / 07 / 2018 20 / 01 / 2018 | Eve Turnbull Eve Turnbull |
| 11 | 1:04.70 – SC 1:07.11 – LC | 13 / 07 / 2019 27 / 04 / 2019 | Eve Turnbull Eve Turnbull |
| 12 | 1:03.76 – SC 1:04.88 – LC | 14 / 02 / 2009 01 / 02 / 2020 | Mia Sallis Eve Turnbull |
| 13 | 1:03.60 – SC 1:04.74 – LC | 01 / 06 / 2009 25 / 02 / 2023 | Mia Sallis Abbey Turnbull |
| 14 | 1:00.44 – SC 1:01.90 – LC | 21 / 05 / 2022 23 / 07 / 2022 | Eve Turnbull Eve Turnbull |
| 15 | 0:59.59 – SC 1:00.22 – LC | 18 / 03 / 2023 29 / 04 / 2023 | Eve Turnbull Eve Turnbull |
| 16 | 0:59.20 – SC 1:00.46 – LC | 22 / 06 / 2024 04 / 05 / 2024 | Eve Turnbull Eve Turnbull |
| 17 | 0:58.96 – SC 1:00.38 – LC | 28 / 06 / 2025 29 / 07 / 2024 | Eve Turnbull Eve Turnbull |
| 18 | 0:59.31 – SC 1:05.00 – LC | 14 / 11 / 2025 19 / 02 / 2022 | Eve Turnbull Jessica Mitchell |
| 19 – 24 | 1:03.01 – SC | 15 / 10 / 2022 | Jessica Mitchell |
| 25+ | 1:05.43 – SC 1:15.66 – LC | 23 / 03 / 2025 01 / 06 / 2019 | Amy Hoyle Rachel Knight |