| Drake Blue Oval Showcase 2020 | 200m (Men) | 20.95 | 4 | GBR | 2020-08-29 00:00:00 | FINAL | | |
| Olympic Games 2024 Paris | 400m (Men) | 43.44 | 2 | GBR | 2024-08-07 00:00:00 | FINAL | | AR |
| Olympic Games 2024 Paris | 400m (Men) | 44.07 | 1 | GBR | 2024-08-06 00:00:00 | SF3 | | |
| Olympic Games 2024 Paris | 400m (Men) | 44.78 | 1 | GBR | 2024-08-04 00:00:00 | H1 | | |
| World Championship 2023 Budapest | 400m (Men) | 44.31 | 2 | GBR | 2023-08-24 00:00:00 | FINAL | | |
| World Championship 2023 Budapest | 400m (Men) | 44.26 | 1 | GBR | 2023-08-22 00:00:00 | SF2 | | AR |
| World Championship 2023 Budapest | 400m (Men) | 44.69 | 2 | GBR | 2023-08-20 00:00:00 | H2 | | SB |
| World Championship 2022 Oregon | 400m (Men) | 44.66 | 3 | GBR | 2022-07-22 00:00:00 | FINAL | | |
| World Championship 2022 Oregon | 400m (Men) | 44.38 | 2 | GBR | 2022-07-20 00:00:00 | SF1 | | |
| World Championship 2022 Oregon | 400m (Men) | 45.49 | 1 | GBR | 2022-07-17 00:00:00 | H6 | | |
| Diamond League 2022 Birmingham | 400m (Men) | 45.32 | 1 | GBR | 2022-05-21 00:00:00 | FINAL | | |
| World Championship 2019 Doha | 400m (Men) | DNF | | GBR | 2019-10-01 00:00:00 | H1 | | |
| Diamond League 2019 Birmingham | 400m (Men) | 45.55 | 3 | GBR | 2019-08-18 00:00:00 | FINAL | | SB |
| Diamond League 2018 Zurich | 400m (Men) | 44.95 | 3 | GBR | 2018-08-30 00:00:00 | FINAL | 1183 | |
| Diamond League 2018 Birmingham | 400m (Men) | 45.59 | 2 | GBR | 2018-08-18 00:00:00 | FINAL | | |
| European Championship 2018 Berlin | 400m (Men) | 44.78 | 1 | GBR | 2018-08-10 00:00:00 | FINAL | | |
| European Championship 2018 Berlin | 400m (Men) | 44.76 | 1 | GBR | 2018-08-08 00:00:00 | SF1 | | |
| Diamond League 2018 London | 400m (Men) | 44.63 | 6 | GBR | 2018-07-21 00:00:00 | FINAL | 1206 | SB |
| Diamond League 2018 Rabat | 400m (Men) | 44.79 | 3 | GBR | 2018-07-13 00:00:00 | FINAL | | |
| Diamond League 2018 Rome | 400m (Men) | 45.52 | 7 | GBR | 2018-05-31 00:00:00 | FINAL | 1144 | |
| Commonwealth Games 2018 Gold Coast | 400m (Men) | DQ | | ENG | 2018-04-08 00:00:00 | H3 | 0 | |
| World Championship 2017 London | 400m (Men) | 44.74 | 4 | GBR | 2017-08-06 00:00:00 | SF2 | 1198 | SB |
| World Championship 2017 London | 400m (Men) | 45.31 | 5 | GBR | 2017-08-05 00:00:00 | Heat1 | 1158 | |
| Diamond League 2017 London | 400m (Men) | DNF | | GBR | 2017-07-09 00:00:00 | FINAL | 0 | |
| Diamond League 2017 Oslo | 400m (Men) | 45.16 | 2 | GBR | 2017-06-15 00:00:00 | FINAL | 1169 | SB |
| Diamond League 2017 Eugene | 400m (Men) | 46.08 | 7 | GBR | 2017-05-28 00:00:00 | FINAL | 1106 | |
| Diamond League 2016 Zurich | 400m (Men) | DNF | | GBR | 2016-09-01 00:00:00 | FINAL | 0 | |
| Olympic Games 2016 Rio | 400m (Men) | 44.61 | 8 | GBR | 2016-08-14 00:00:00 | FINAL | 1207 | |
| Olympic Games 2016 Rio | 400m (Men) | 45.26 | 3 | GBR | 2016-08-13 00:00:00 | Round1 Heat6 | 1162 | |
| Diamond League 2016 London | 400m (Men) | 45.03 | 1 | GBR | 2016-07-22 00:00:00 | FINAL | 1178 | |
| Diamond League 2016 Birmingham | 400m (Men) | 45.13 | 4 | GBR | 2016-06-05 00:00:00 | FINAL | 1171 | SB |