| (1) | 38.68 | Amy Allcock | (Aldershot, Farnham & District AC) | Sheffield | 11.07.2009 |
| (2) | 38.98 | Twinelle Hopeson | (Croydon Harriers) | Kingston | 10.05.2008 |
| (3) | 39.11 | Lily-Rose Brown (U15) | (Herne Hill Harriers) | Chelmsford | 14.08.2022 |
| (4) | 39.15 | Shona Richards | (Epsom & Ewell Harriers) | Bedford | 19.08.2012 |
| (5) | 39.3 | Eleanor Grove | (Guildford & Godalming AC) | Basingstoke | 2.08.2015 |
| (6) | 39.34 | Chyna Russell | (Sutton & District AC) | Birmingham | 7.07.2017 |
| (7) | 39.38 | Olivia Hines | (Herne Hill Harriers) | Sheffield | 29.07.2000 |
| | 39.38 | Arabella Wilson | (Winchester & District AC) | Bedford | 28.08.2022 |
| (9) | 39.49 | Jemma Wood | (Guildford & Godalming AC) | Little Marlow | 19.07.2015 |
| (10) | 39.52 | Alex Shaw | (Guildford & Godalming AC) | Gateshead | 8.07.2016 |
10 athletes with performances of 39.52 or better. |
