Having left Middlesbrough in 1999, he had short spells at Barnsley, Notts County and Leigh RMI over the next couple of seasons, before a much longer stint at Bangor City commenced in 2000.

[2] He was given his debut for United on 16 May 1984 by manager Ron Atkinson, in their 2–0 league defeat against Nottingham Forest at the City Ground.

[5] He was United's regular left-back in the 1990–91 season, but when Paul Parker signed in the close season, Denis Irwin was switched to left-back and Blackmore returned to his familiar pattern of alternating between different positions, although he did enjoy a good run at right-back when Parker was injured.

Blackmore collected an FA Premier League title medal in 1992–93, although he was no longer a regular player at the club, often coming on as a substitute or standing in as a full-back or on the flanks on the few occasions he did start a game.

[9] On 3 September 2018, Blackmore joined the coaching staff of the Dynamo Brest Academy[10] He left the club in summer 2019.