| Swimming |
2014 European Junior Swimming Championships |
Dordrecht |
 NED |
4 x 200 m Freestyle Relay, Men |
🥉 |
 GBR |
|
| Swimming |
2014 European Junior Swimming Championships |
Dordrecht |
NED |
1,500 m Freestyle, Men |
🥇 |
GBR |
|
| Swimming |
2014 Commonwealth Games |
Glasgow |
 SCO |
1,500 m Freestyle, Men |
🥉 |
 WAL |
|
| Swimming |
2016 European Aquatics Championships |
London |
GBR |
1,500 m Freestyle, Men |
13 |
GBR |
|
| Swimming |
2016 European Aquatics Championships |
London |
GBR |
800 m Freestyle, Men |
11 |
GBR |
|
| Swimming |
2017 World Aquatics Championships |
Budapest |
 HUN |
1,500 m Freestyle, Men |
18 |
GBR |
|
| Swimming |
2018 Commonwealth Games |
Gold Coast |
 AUS |
400 m Freestyle, Men |
4 |
WAL |
|
| Swimming |
2018 Commonwealth Games |
Gold Coast |
AUS |
1,500 m Freestyle, Men |
🥈 |
WAL |
|
| Swimming |
2018 European Aquatics Championships |
Glasgow, Edinburgh and Loch Lomond |
GBR |
400 m Freestyle, Men |
DNS |
GBR |
|
| Swimming |
2019 World Aquatics Championships |
Gwangju |
 KOR |
400 m Freestyle, Men |
17 |
GBR |
|
| Swimming |
2019 World Aquatics Championships |
Gwangju |
KOR |
1,500 m Freestyle, Men |
13 |
GBR |
|
| Swimming |
2020 European Aquatics Championships |
Budapest |
HUN |
1,500 m Freestyle, Men |
5 |
GBR |
|
| Swimming |
2020 European Aquatics Championships |
Budapest |
HUN |
800 m Freestyle, Men |
17 |
GBR |
|
| Swimming |
2022 World Aquatics Championships |
Budapest |
HUN |
400 m Freestyle, Men |
14 |
GBR |
|
| Swimming |
2022 World Aquatics Championships |
Budapest |
HUN |
800 m Freestyle, Men |
10 |
GBR |
|
| Swimming |
2022 World Aquatics Championships |
Budapest |
HUN |
1,500 m Freestyle, Men |
7 |
GBR |
|
| Swimming |
2022 World Swimming Championships (25 m) |
Melbourne |
AUS |
400 m Freestyle, Men |
15 |
GBR |
|
| Swimming |
2022 World Swimming Championships (25 m) |
Melbourne |
AUS |
1,500 m Freestyle, Men |
6 |
GBR |
|
| Swimming |
2023 World Aquatics Championships |
Fukuoka |
 JPN |
800 m Freestyle, Men |
23 |
GBR |
|
| Swimming |
2023 World Aquatics Championships |
Fukuoka |
JPN |
1,500 m Freestyle, Men |
14 |
GBR |
|