Federation · GBR
Great Britain & NI national best marks
Best marks by Great Britain & NI athletes in each event, compiled from the all-time lists we import. Derived national bests — not official national records (see note below).
193
Stored marks
94
Distinct marks shown
Women's 400m
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | Amber Anning | 49.29 | 9 Aug 2024 | — | — |
| 2 | Amber Anning | 49.36 | 18 Sep 2025 | — | — |
| 3 | Amber Anning | 49.38 | 15 Sep 2025 | — | — |
| 4 | Christine Ohuruogu | 49.41 | 12 Aug 2013 | — | — |
| 5 | Kathy Cook | 49.43 | 6 Aug 1984 | — | — |
| 6 | Amber Anning | 49.51 | 11 May 2024 | — | — |
| 7 | Katharine Merry | 49.59 | 11 Jun 2001 | — | — |
| 7= | Amber Anning | 49.59 | 8 Jun 2024 | — | — |
| 9 | Christine Ohuruogu | 49.61 | 29 Aug 2007 | — | — |
| 10 | Christine Ohuruogu | 49.62 | 19 Aug 2008 | — | — |
| 11 | Amber Anning | 49.63 | 20 Jul 2024 | — | — |
| 12 | Nicola Sanders | 49.65 | 29 Aug 2007 | — | — |
| 13 | Amber Anning | 49.68 | 5 Aug 2024 | — | — |
| 14 | Christine Ohuruogu | 49.70 | 5 Aug 2012 | — | — |
| 15 | Katharine Merry | 49.72 | 25 Sep 2000 | — | — |
| 16 | Christine Ohuruogu | 49.75 | 11 Aug 2013 | — | — |
| 16= | Amber Anning | 49.75 | 28 Aug 2025 | — | — |
| 18 | Nicola Sanders | 49.77 | 27 Aug 2007 | — | — |
| 19 | Donna Fraser | 49.79 | 25 Sep 2000 | — | — |
| 20 | Yemi Mary John | 49.85 | 17 May 2026 | — | — |
| 21 | Laviai Nielsen | 49.87 | 20 Jul 2024 | — | — |
| 22 | Amber Anning | 49.96 | 20 Jun 2025 | — | — |
| 22= | Amber Anning | 49.96 | 14 Sep 2025 | — | — |
| 22= | Amber Anning | 49.96 | 13 Aug 2026 | — | — |
| 25 | Jodie Williams | 49.97 | 4 Aug 2021 | — | — |
| 25= | Jodie Williams | 49.97 | 6 Aug 2021 | — | — |
| 27 | Christine Ohuruogu | 50.00 | 27 Jul 2013 | — | — |
| 28 | Katharine Merry | 50.05 | 8 Jul 2000 | — | — |
| 29 | Amber Anning | 50.08 | 13 Apr 2024 | — | — |
| 30 | Amber Anning | 50.11 | 16 Aug 2025 | — | — |
| 31 | Christine Ohuruogu | 50.14 | 17 Aug 2008 | — | — |
| 32 | Christine Ohuruogu | 50.16 | 27 Aug 2007 | — | — |
| 32= | Christine Ohuruogu | 50.16 | 25 Aug 2015 | — | — |
| 32= | Amber Anning | 50.16 | 20 Jun 2026 | — | — |
| 35 | Amber Anning | 50.17 | 15 Jun 2025 | — | — |
| 36 | Amber Anning | 50.19 | 25 May 2024 | — | — |
| 36= | Amber Anning | 50.19 | 4 Jun 2026 | — | — |
| 38 | Christine Ohuruogu | 50.20 | 23 Sep 2007 | — | — |
| 38= | Christine Ohuruogu | 50.20 | 10 Aug 2013 | — | — |
| 40 | Katharine Merry | 50.21 | 24 Aug 1999 | — | — |
| 40= | Donna Fraser | 50.21 | 24 Sep 2000 | — | — |
| 40= | Christine Ohuruogu | 50.21 | 18 Aug 2009 | — | — |
| 43 | Christine Ohuruogu | 50.22 | 4 Aug 2012 | — | — |
| 44 | Amber Anning | 50.23 | 23 May 2024 | — | — |
| 44= | Yemi Mary John | 50.23 | 20 Jun 2026 | — | — |
| 46 | Amber Anning | 50.24 | 12 Jun 2025 | — | — |
| 46= | Yemi Mary John | 50.24 | 18 Jul 2026 | — | — |
| 48 | Katharine Merry | 50.28 | 25 Jun 2000 | — | — |
| 48= | Christine Ohuruogu | 50.28 | 21 Mar 2006 | — | — |
| 50 | Katharine Merry | 50.32 | 24 Sep 2000 | — | — |
| 50= | Emily Newnham | 50.32 | 18 Jul 2026 | — | — |
| 52 | Yemi Mary John | 50.33 | 26 Jun 2026 | — | — |
| 52= | Yemi Mary John | 50.33 | 13 Aug 2026 | — | — |
| 54 | Nicola Sanders | 50.34 | 14 Sep 2007 | — | — |
| 55 | Amber Anning | 50.35 | 10 Jun 2002 | — | — |
| 55= | Christine Ohuruogu | 50.35 | 16 Aug 2009 | — | — |
| 57 | Victoria Ohuruogu | 50.36 | 10 Jun 2023 | — | — |
| 57= | Laviai Nielsen | 50.36 | 5 Aug 2024 | — | — |
| 57= | Yemi Mary John | 50.36 | 29 May 2026 | — | — |
| 60 | Yemi Mary John | 50.38 | 11 Sep 2026 | — | — |
| 61 | Phylis Smith | 50.40 | 3 Aug 1992 | — | — |
| 61= | Christine Ohuruogu | 50.40 | 16 Sep 2007 | — | — |
| 63 | Christine Ohuruogu | 50.41 | 28 Aug 2009 | — | — |
| 64 | Christine Ohuruogu | 50.42 | 14 Jul 2012 | — | — |
| 65 | Christine Ohuruogu | 50.43 | 4 Sep 2009 | — | — |
| 66 | Katharine Merry | 50.44 | 6 Jun 2001 | — | — |
| 66= | Nicola Sanders | 50.44 | 23 Sep 2007 | — | — |
| 68 | Katharine Merry | 50.45 | 5 Aug 2000 | — | — |
| 68= | Nicola Sanders | 50.45 | 16 Aug 2009 | — | — |
| 68= | Charlotte Henrich | 50.45 | 18 Jul 2026 | — | — |
| 71 | Kathy Cook | 50.46 | 17 Sep 1982 | — | — |
| 71= | Christine Ohuruogu | 50.46 | 26 Aug 2007 | — | — |
| 73 | Amber Anning | 50.47 | 30 Jun 2024 | — | — |
| 74 | Victoria Ohuruogu | 50.48 | 16 Jul 2023 | — | — |
| 75 | Katharine Merry | 50.50 | 23 Sep 2000 | — | — |
| 75= | Christine Ohuruogu | 50.50 | 21 Aug 2004 | — | — |
| 75= | Perri Shakes-Drayton | 50.50 | 22 Jun 2013 | — | — |
| 75= | Victoria Ohuruogu | 50.50 | 16 Aug 2022 | — | — |
| 75= | Victoria Ohuruogu | 50.50 | 5 Aug 2023 | — | — |
| 75= | Yemi Mary John | 50.50 | 19 Jul 2025 | — | — |
| 81 | Victoria Ohuruogu | 50.51 | 17 Aug 2022 | — | — |
| 81= | Charlotte Henrich | 50.51 | 13 Aug 2026 | — | — |
| 83 | Katharine Merry | 50.52 | 26 Aug 1999 | — | — |
| 84 | Christine Ohuruogu | 50.53 | 10 May 2013 | — | — |
| 84= | Amber Anning | 50.53 | 3 Aug 2025 | — | — |
| 86 | Katharine Merry | 50.56 | 25 Aug 2000 | — | — |
| 86= | Christine Ohuruogu | 50.56 | 23 Aug 2007 | — | — |
| 88 | Christine Ohuruogu | 50.57 | 28 Sep 2007 | — | — |
| 89 | Katharine Merry | 50.58 | 7 Aug 1999 | — | — |
| 89= | Christine Ohuruogu | 50.58 | 4 May 2013 | — | — |
| 89= | Charlotte Henrich | 50.58 | 20 Jun 2026 | — | — |
| 92 | Christine Ohuruogu | 50.59 | 6 Jul 2012 | — | — |
| 92= | Victoria Ohuruogu | 50.59 | 6 Aug 2024 | — | — |
| 94 | Victoria Ohuruogu | 50.60 | 20 Aug 2023 | — | — |
| 95 | Lina Nielsen | 50.61 | 18 Jul 2026 | — | — |
| 96 | Katharine Merry | 50.62 | 25 Jul 1999 | — | — |
| 97 | Michelle Scutt | 50.63 | 31 May 1982 | — | — |
| 97= | Christine Ohuruogu | 50.63 | 30 Jun 2013 | — | — |
| 97= | Christine Ohuruogu | 50.63 | 27 Aug 2015 | — | — |
| 100 | Amber Anning | 50.64 | 29 Jun 2024 | — | — |
| 101 | Katharine Merry | 50.67 | 22 Jul 2001 | — | — |
| 101= | Christine Ohuruogu | 50.67 | 26 Aug 2012 | — | — |
| 101= | Amber Anning | 50.67 | 6 Jun 2024 | — | — |
| 101= | Laviai Nielsen | 50.67 | 7 Jul 2024 | — | — |
| 105 | Nicola Sanders | 50.68 | 28 Jul 2006 | — | — |
| 106 | Christine Ohuruogu | 50.69 | 9 Jun 2012 | — | — |
| 107 | Nicola Sanders | 50.70 | 16 Sep 2007 | — | — |
| 108 | Allison Curbishley | 50.71 | 18 Sep 1998 | — | — |
| 108= | Nicola Sanders | 50.71 | 17 Aug 2008 | — | — |
| 108= | Laviai Nielsen | 50.71 | 10 Jun 2024 | — | — |
| 108= | Yemi Mary John | 50.71 | 14 Sep 2025 | — | — |
| 112 | Katharine Merry | 50.72 | 15 Jun 2000 | — | — |
| 112= | Victoria Ohuruogu | 50.72 | 7 Aug 2022 | — | — |
| 114 | Allison Curbishley | 50.73 | 30 Aug 1998 | — | — |
| 114= | Christine Ohuruogu | 50.73 | 16 Jul 2005 | — | — |
| 114= | Laviai Nielsen | 50.73 | 9 Jun 2024 | — | — |
| 117 | Kathy Cook | 50.74 | 13 Jul 1984 | — | — |
| 117= | Nicola Sanders | 50.74 | 16 Jul 2006 | — | — |
| 117= | Victoria Ohuruogu | 50.74 | 21 Aug 2023 | — | — |
| 117= | Amber Anning | 50.74 | 20 Jun 2026 | — | — |
| 121 | Joslyn Hoyte-Smith | 50.75 | 18 Jun 1982 | — | — |
| 122 | Joslyn Hoyte-Smith | 50.76 | 31 May 1982 | — | — |
| 122= | Victoria Ohuruogu | 50.76 | 20 Jul 2024 | — | — |
| 124 | Allison Curbishley | 50.77 | 2 Aug 1997 | — | — |
| 124= | Allison Curbishley | 50.77 | 19 Jul 1998 | — | — |
| 124= | Donna Fraser | 50.77 | 23 Sep 2000 | — | — |
| 124= | Christine Ohuruogu | 50.77 | 17 Aug 2012 | — | — |
| 128 | Lina Nielsen | 50.78 | 14 Jul 2024 | — | — |
| 129 | Christine Ohuruogu | 50.79 | 21 Aug 2005 | — | — |
| 129= | Yemi Mary John | 50.79 | 29 May 2025 | — | — |
| 129= | Victoria Ohuruogu | 50.79 | 3 Aug 2025 | — | — |
| 132 | Phylis Smith | 50.80 | 16 Aug 1992 | — | — |
| 132= | Christine Ohuruogu | 50.80 | 25 Jul 2008 | — | — |
| 132= | Nicola Sanders | 50.80 | 20 Sep 2009 | — | — |
| 132= | Christine Ohuruogu | 50.80 | 3 Aug 2012 | — | — |
| 136 | Amarachi Pipi | 50.81 | 20 Aug 2023 | — | — |
| 136= | Victoria Ohuruogu | 50.81 | 8 Sep 2023 | — | — |
| 136= | Yemi Mary John | 50.81 | 20 Jun 2026 | — | — |
| 139 | Kathy Cook | 50.82 | 2 Sep 1984 | — | — |
| 139= | Lee McConnell | 50.82 | 20 Sep 2002 | — | — |
| 139= | Christine Ohuruogu | 50.82 | 17 Jul 2015 | — | — |
| 142 | Christine Ohuruogu | 50.83 | 14 Sep 2008 | — | — |
| 142= | Laviai Nielsen | 50.83 | 20 Jul 2019 | — | — |
| 142= | Laviai Nielsen | 50.83 | 4 Aug 2023 | — | — |
| 145 | Allison Curbishley | 50.84 | 30 Aug 1997 | — | — |
| 145= | Laviai Nielsen | 50.84 | 8 Sep 2023 | — | — |
| 145= | Emily Newnham | 50.84 | 27 Jun 2025 | — | — |
| 145= | Yemi Mary John | 50.84 | 3 Aug 2025 | — | — |
| 149 | Allison Curbishley | 50.85 | 12 Jul 1997 | — | — |
| 149= | Donna Fraser | 50.85 | 17 Sep 1998 | — | — |
| 149= | Christine Ohuruogu | 50.85 | 13 Sep 2011 | — | — |
| 149= | Amber Anning | 50.85 | 2 May 2025 | — | — |
| 153 | Katharine Merry | 50.86 | 23 Aug 1999 | — | — |
| 153= | Laviai Nielsen | 50.86 | 25 May 2024 | — | — |
| 153= | Laviai Nielsen | 50.86 | 5 Jul 2025 | — | — |
| 156 | Phylis Smith | 50.87 | 5 Aug 1992 | — | — |
| 156= | Donna Fraser | 50.87 | 4 Jul 1997 | — | — |
| 156= | Lee McConnell | 50.87 | 4 Jul 2004 | — | — |
| 156= | Christine Ohuruogu | 50.87 | 20 Mar 2006 | — | — |
| 156= | Nicola Sanders | 50.87 | 10 Aug 2006 | — | — |
| 156= | Anyika Onuora | 50.87 | 25 Aug 2015 | — | — |
| 162 | Joslyn Hoyte-Smith | 50.88 | 1 Jul 1980 | — | — |
| 162= | Nicola Sanders | 50.88 | 2 Jul 2008 | — | — |
| 162= | Christine Ohuruogu | 50.88 | 14 May 2010 | — | — |
| 165 | Victoria Ohuruogu | 50.89 | 9 Jul 2023 | — | — |
| 165= | Charlotte Henrich | 50.89 | 26 Jun 2026 | — | — |
| 167 | Allison Curbishley | 50.92 | 26 Jul 1998 | — | — |
| 167= | Laviai Nielsen | 50.92 | 30 Jun 2024 | — | — |
| 169 | Lorraine Hanson | 50.93 | 26 Aug 1991 | — | — |
| 169= | Christine Ohuruogu | 50.93 | 5 May 2012 | — | — |
| 169= | Laviai Nielsen | 50.93 | 10 Sep 2023 | — | — |
| 169= | Victoria Ohuruogu | 50.93 | 5 Aug 2024 | — | — |
| 173 | Donna Fraser | 50.94 | 13 Aug 2000 | — | — |
| 173= | Christine Ohuruogu | 50.94 | 31 Aug 2009 | — | — |
| 173= | Jodie Williams | 50.94 | 13 Jul 2021 | — | — |
| 176 | Kathy Cook | 50.95 | 31 Aug 1983 | — | — |
| 176= | Christine Ohuruogu | 50.95 | 6 Sep 2013 | — | — |
| 178 | Kathy Cook | 50.96 | 7 Sep 1984 | — | — |
| 178= | Nicole Yeargin | 50.96 | 10 Jun 2021 | — | — |
| 180 | Allison Curbishley | 50.97 | 5 Jun 1998 | — | — |
| 180= | Nicola Sanders | 50.97 | 3 Aug 2007 | — | — |
| 182 | Linda Staines | 50.98 | 26 Aug 1991 | — | — |
| 182= | Christine Ohuruogu | 50.98 | 11 Jul 2004 | — | — |
| 182= | Christine Ohuruogu | 50.98 | 4 Jun 2010 | — | — |
| 182= | Perri Shakes-Drayton | 50.98 | 19 May 2013 | — | — |
| 182= | Christine Ohuruogu | 50.98 | 13 Jul 2013 | — | — |
| 182= | Nicole Yeargin | 50.98 | 12 Jul 2026 | — | — |
| 182= | Nicole Yeargin | 50.98 | 18 Jul 2026 | — | — |
| 189 | Phylis Smith | 50.99 | 10 Jul 1992 | — | — |
| 189= | Katharine Merry | 50.99 | 2 Jul 2000 | — | — |
| 189= | Christine Ohuruogu | 50.99 | 16 Jul 2008 | — | — |
| 189= | Jodie Williams | 50.99 | 3 Aug 2021 | — | — |
| 189= | Victoria Ohuruogu | 50.99 | 20 Jul 2022 | — | — |
Every mark in scope within the compiled depth. Equal marks share a rank ("1=" style). An athlete with marks for two nations appears under each nation represented at the time (e.g. Obikwelu under Nigeria and Portugal).
About this derivation
These lists are derived from the marks in our database — including the complete legal all-time lists imported from alltime-athletics.com — grouped by the nation the athlete was representing at each mark. They are not official national records: federations ratify national records under their own eligibility rules, and some marks here may not qualify.