A former European youth (U18) and World Junior (U20) champion in 200 metres, In 2022, he was part of the Great Britain relay team that won European and Commonwealth gold, and World Championship bronze, in the men's 4 x 100 metres relay.

Efokolo was born in Kinshasa in the Democratic Republic of Congo before relocating to Britain, where he became a member of the Manchester Sale Harriers.

[4] He won medals in three senior 4x100m relay competitions in 2022, winning gold for England at his home Commonwealth Games in Birmingham, gold for Britain at the European Championships in Munich and bronze at the 2022 World Athletics Championships in Eugene, Oregon.

[6][7] That month, he was selected as part of the British team for the 2024 World Athletics Relays in Nassau, Bahamas.

[8] In May 2024, he was selected to run the 200 metres and 4x100m relay for Britain at the 2024 European Athletics Championships in Rome.