Bradley began his career with South Kirkby[2] he joined Grimsby Town of the Football League Second Division in 1907.
After a season at Blundell Park, he dropped down to the Midland League with Mexborough Town.
[3] He signed for Sheffield Wednesday in April 1910[4] with whom he briefly returned to top-flight football and made two appearances for, before joining Bristol Rovers in May 1911,[5] where he ended his career in the Southern League.
[4] Martin's son, Jack (1916–2002)[2] played at inside forward for various clubs in the 1930s and 1940s, including Swindon Town, Southampton and Bolton Wanderers.
[7] His brother was James Bradley (1881–1954), who was a member of Liverpool's Championship winning side of 1905–06 and also played for Stoke in the 1890s.