John Singleton, the troublemaking larrikin adman who’s turning 80 this year, was all but penniless when he returned to advertising in 1985. Then he and his lieutenants, Russell Tate and Mike Connaghan ultimately built a holding company worth close to $1bn. He was “impossible to follow” in a new business pitch but with Singleton’s old group now back firmly in British control after WPP acquired and delisted WPP AUNZ, the trio reflect on what was and what could have been (with some trademark swipes along the way).