Alongside his friend Riff Regan, Moss joined the punk band London in 1976, after being tried out as a drummer with The Clash; later, he said "The mix of personalities didn't work. Their attitudes were too different to mine." London released a single entitled "Everyone's a Winner", and were managed by Simon Napier-Bell. Eventually they recorded two singles, a four-track EP and an album for MCA Records in 1977. Following this, Moss went on tour with established punk group The Stranglers, and the band got a record deal.