MacCormick ended his musical career in the early 1980s when, after serious clashes and financial problems, Random Hold split up. He then worked for the Liberal Democrats and for the developers of the Polly, a then rival in the Liberal Democrats to EARS Electoral software, going on to do market research. He later became a Liberal Democrat councillor for the Anerley ward of the London Borough of Bromley. Lately, he played a bass solo on Manzanera's 2004 album 6PM in the track "Wish You Well", a tribute to MacCormick's late brother Ian. He is also the producer of the 2005 Manzanera album 50 Minutes Later.