| Athletics |
2017 European Athletics Cross Country Championships |
Šamorín |
 SVK |
Cross Country Mixed Relay, Mixed |
🥇 |
 GBR |
as Melissa Courtney |
| Athletics |
2018 Commonwealth Games |
Gold Coast |
 AUS |
1,500 m, Women |
🥉 |
 WAL |
as Melissa Courtney |
| Athletics |
2018 Commonwealth Games |
Gold Coast |
AUS |
5,000 m, Women |
9 |
WAL |
as Melissa Courtney |
| Athletics |
2018 European Athletics Cross Country Championships |
Tilburg |
 NED |
Cross Country Team, Women |
🥈 |
GBR |
as Melissa Courtney |
| Athletics |
2019 European Athletics Indoor Championships |
Glasgow |
GBR |
3,000 m, Women |
🥉 |
GBR |
as Melissa Courtney |
| Athletics |
2022 Commonwealth Games |
Birmingham |
 ENG |
1,500 m, Women |
10 |
WAL |
|
| Athletics |
2023 European Athletics Indoor Championships |
İstanbul |
 TUR |
3,000 m, Women |
🥉 |
GBR |
|