Hills and Green created (with star Anthony Newley) and wrote the six-part surreal comedy series The Strange World of Gurney Slade (1960).
The partnership also wrote for such performers as Roy Castle and Frankie Howerd, but their best-remembered collaboration was with the comedy double act Eric Morecambe and Ernie Wise on the ATV show Two of a Kind (1962–66), and the comedians' first colour BBC series in 1968.
Hills and Green were involved in the writing of the three cinema films made by Morecambe and Wise in the 1960s: The Intelligence Men (1965) (in which they also had cameo roles), That Riviera Touch (1966), and The Magnificent Two (1967).
[2] After their two-year contract ended, the two writers attempted to try to break into the US TV market with Green and Hills writing for Johnny Carson.
During the early eighties they wrote for the British double act Cannon and Ball, occasionally recycling material that had been used for Morecambe and Wise in the sixties.