Seamus Derbyshire

Seamus Derbyshire (born 27 January 2000) is a British track and field athlete who competes in the 400m hurdles.

Early life
From Stockton Brook, in Staffordshire Moorlands, his running club is the City of Stoke Athletics Club in Stoke-on-Trent. He attended Loughborough University

Junior career
Derbyshire won a silver medal in the 400m hurdles at the 2017 Commonwealth Youth Games in Nassau, Bahamas, finishing behind Alastair Chalmers. He won another silver medal at the 2019 European Athletics U20 Championships held in Borås.

2022
Derbyshire set a new personal best time for the 400m hurdles of 44.94 seconds in Oordegem, Belgium, in May 2022. He made his senior Great Britain debut at the 2022 European Athletics Championships in Munich, in August 2022, in which qualified for the semi-finals of the 400m hurdles.

2023
He wore the British vest again the following year, finishing third in the 2023 European Athletics Team Championships First Division 400m hurdles race, in Chorzow, in June 2023. That month in Geneva, he lowered his 400 metres hurdles personal best to 49.29 seconds. In July 2023, he finished as runner-up at the UK National Championships 400m hurdles in Manchester, behind Alastair Chalmers.