Career
He made 397 appearances for Tranmere keeping 109 clean sheets. He made his debut on 24 September 1971 at the age of 18 in a goalless draw against Bolton Wanderers and, on October 2, 1973, played in the Tranmere team which beat Arsenal 1–0 at Highbury in a second round League Cup tie. Johnson played his last game for Tranmere in a 2–2 draw against Mansfield Town on Boxing Day 1981.
He was awarded a testimonial match for his service to Rovers in May 1982, in which he scored the equaliser from the penalty spot in a 1–1 draw against Everton.
Following his football career, Johnson became head of sports development for Liverpool City Council.
