(1) | 40.02 | CBP | Holly Ryan | (Shaftesbury Barnet Harriers) | 1 FINAL | Kingsmeadow Stadium | 12 May 2024 |
(2) | 40.39 | | Tia Garrard | (Kingston AC & Polytechnic Harriers) | 2 FINAL | Kingsmeadow Stadium | 12 May 2024 |
(3) | 41.45 | CBP | Katie Sakaria | (Guildford & Godalming AC) | 1 FINAL | Kingsmeadow Stadium | 12 May 2019 |
(4) | 41.77 | | Lily-Rose Brown | (Herne Hill Harriers) | 1 FINAL | Kingsmeadow Stadium | 15 May 2022 |
(5) | 41.81 | | Tia Garrard | (Kingston AC & Polytechnic Harriers) | 1 HEAT 2 | Kingsmeadow Stadium | 12 May 2024 |
(6) | 42.09 | CBP | Katie Sakaria | (Guildford & Godalming AC) | 1 HEAT 1 | Kingsmeadow Stadium | 12 May 2019 |
(7) | 42.18 | | Vivienne Jonczyk | (Hercules Wimbledon AC) | 1 FINAL | Kingsmeadow Stadium | 14 May 2023 |
(8) | 42.20 | | Lily-Rose Brown | (Herne Hill Harriers) | 1 HEAT 1 | Kingsmeadow Stadium | 15 May 2022 |
(9) | 42.22 | | Emma Fisher | (Walton AC) | 2 FINAL | Kingsmeadow Stadium | 12 May 2019 |
(10) | 42.38 | | Grace Connor | (Guildford & Godalming AC) | 2 FINAL | Kingsmeadow Stadium | 15 May 2022 |
(11) | 42.43 | CBP | Olivia James | (Camberley & District AC) | 1 FINAL | Kingsmeadow Stadium | 13 May 2018 |
(12) | 42.44 | | Holly Ryan | (Guildford & Godalming AC) | 2 FINAL | Kingsmeadow Stadium | 14 May 2023 |
(13) | 42.50 | | Lucy Wright | (Herne Hill Harriers) | 3 FINAL | Kingsmeadow Stadium | 15 May 2022 |
(14) | 42.53 | CBP | Olivia James | (Camberley & District AC) | 1 HEAT 2 | Kingsmeadow Stadium | 13 May 2018 |
(15) | 42.57 | | Grace Connor | (Guildford & Godalming AC) | 1 HEAT 2 | Kingsmeadow Stadium | 15 May 2022 |
(16) | 42.74 | | Julia Newman | (Sutton & District AC) | 1 HEAT 2 | Kingsmeadow Stadium | 1 August 2021 |
(17) | 42.81 | | Freya McAndie | (Hercules Wimbledon AC) | 3 FINAL | Kingsmeadow Stadium | 12 May 2024 |
(18) | 42.82 | | Amy Mcloughlin | (Walton AC) | 1 HEAT 1 | Kingsmeadow Stadium | 12 May 2024 |
(19) | 42.89 | CBP | Susannah Lecoutre | (Guildford & Godalming AC) | 1 HEAT 1 | Kingsmeadow Stadium | 13 May 2018 |
(20) | 42.90 | CBP | Zoe Dake | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 14 May 2017 |
| 42.90 | | Holly Ryan | (Shaftesbury Barnet Harriers) | 1 HEAT 3 | Kingsmeadow Stadium | 12 May 2024 |
(22) | 42.92 | | Gabriella Berkeley-Agyepong | (Croydon Harriers) | 3 FINAL | Kingsmeadow Stadium | 12 May 2019 |
(23) | 42.93 | | Sian Popham | (Walton AC) | 4 FINAL | Kingsmeadow Stadium | 12 May 2019 |
| 42.93 | | Sophie Wright | (Herne Hill Harriers) | 2 HEAT 1 | Kingsmeadow Stadium | 12 May 2024 |
(25) | 42.94 | CBP | Zoe Dake | (Croydon Harriers) | 1 FINAL | Kingsmeadow Stadium | 15 May 2016 |
| 42.94 | | Gabriella Berkeley-Agyepong | (Croydon Harriers) | 2 HEAT 1 | Kingsmeadow Stadium | 12 May 2019 |
(27) | 42.95 | | Lucy Atkins | (Kingston AC & Polytechnic Harriers) | 2 FINAL | Kingsmeadow Stadium | 13 May 2018 |
| 42.95 | | Emma Fisher | (Walton AC) | 1 HEAT 3 | Kingsmeadow Stadium | 12 May 2019 |
(29) | 42.97 | | Julia Newman | (Sutton & District AC) | 1 FINAL | Kingsmeadow Stadium | 1 August 2021 |
(30) | 42.98 | | Susannah Lecoutre | (Guildford & Godalming AC) | 3 FINAL | Kingsmeadow Stadium | 13 May 2018 |
(31) | 43.04 | | Keiyan Waikwa | (Hercules Wimbledon AC) | 3 HEAT 1 | Kingsmeadow Stadium | 12 May 2024 |
(32) | 43.15 | CBP | Zoe Dake | (Croydon Harriers) | 1 HEAT 2 | Kingsmeadow Stadium | 15 May 2016 |
| 43.15 | | Charlotte Maxwell | (Walton AC) | 3 HEAT 1 | Kingsmeadow Stadium | 12 May 2019 |
(34) | 43.16 | | Sophie Wright | (Herne Hill Harriers) | 4 FINAL | Kingsmeadow Stadium | 12 May 2024 |
(35) | 43.17 | | Lucy Atkins | (Kingston AC & Polytechnic Harriers) | 2 HEAT 1 | Kingsmeadow Stadium | 13 May 2018 |
(36) | 43.36 | | Amelia Bell | (Kingston AC & Polytechnic Harriers) | 2 FINAL | Kingsmeadow Stadium | 15 May 2016 |
(37) | 43.38 | | Freya Taylor | (Epsom & Ewell Harriers) | 3 HEAT 1 | Kingsmeadow Stadium | 13 May 2018 |
(38) | 43.39 | | Amy Mcloughlin | (Walton AC) | 3 FINAL | Kingsmeadow Stadium | 14 May 2023 |
(39) | 43.41 | CBP | Amelia Bell | (Kingston AC & Polytechnic Harriers) | 1 HEAT 1 | Kingsmeadow Stadium | 15 May 2016 |
(40) | 43.44 | | Lucy Wright | (Herne Hill Harriers) | 2 HEAT 2 | Kingsmeadow Stadium | 15 May 2022 |
| 43.44 | | Vivienne Jonczyk | (Hercules Wimbledon AC) | 1 HEAT 1 | Kingsmeadow Stadium | 14 May 2023 |
(42) | 43.45 | | Zoe Dake | (Croydon Harriers) | 1 HEAT 3 | Kingsmeadow Stadium | 14 May 2017 |
(43) | 43.49 | | Elin Roberts | (Guildford & Godalming AC) | 2 FINAL | Kingsmeadow Stadium | 1 August 2021 |
(44) | 43.58 | | Emma Horsey | (Walton AC) | 2 FINAL | Kingsmeadow Stadium | 14 May 2017 |
(45) | 43.61 | | Charlotte Maxwell | (Walton AC) | 5 FINAL | Kingsmeadow Stadium | 12 May 2019 |
(46) | 43.66 | | Sian Popham | (Walton AC) | 1 HEAT 2 | Kingsmeadow Stadium | 12 May 2019 |
(47) | 43.68 | | Emillie Edwards | (Bracknell AC) | 4 FINAL | Kingsmeadow Stadium | 15 May 2022 |
(48) | 43.71 | | Charlotte Williams | (Epsom & Ewell Harriers) | 2 HEAT 2 | Kingsmeadow Stadium | 12 May 2019 |
(49) | 43.77 | | Elin Roberts | (Guildford & Godalming AC) | 2 HEAT 2 | Kingsmeadow Stadium | 1 August 2021 |
(50) | 43.78 | | Freya Taylor | (Epsom & Ewell Harriers) | 4 FINAL | Kingsmeadow Stadium | 13 May 2018 |
|
50 performances of 43.78 or better. |