[3] After spending two years with Barnet, he signed for AFC Wimbledon where he helped them gain promotion and win the Conference South championship.

He scored his debut league goal in his third appearance as a substitute on 16 August 2008 in a 3–1 home victory over Bognor Regis Town.

[9] In February 2019 Mason started a Berks & Bucks Senior Cup game for Maidenhead against Aylesbury United.

[11] Mason joined Hayes & Yeading United at the start of the 2019–20 season,[12] later moving on to Spartan South Midlands League team London Tigers.

Mason was called up to the Montserrat national team in August 2012, for the 2012 Caribbean Championship First Round qualifiers, held in Martinique.

[13] In May 2014, he was called up by Montserrat to face U.S. Virgin Islands and Bonaire in the preliminary round of the 2014 Caribbean Cup qualification phase.