"Three's Company" had been based on the sitcom "Man About the House", which aired on ITV in the United Kingdom from 1973 to 1976. When the series concluded, producers Brian Cooke and Johnnie Mortimer devised two spin-offs. The first was "George and Mildred", which ran from 1976 to 1979 and starred Brian Murphy and Yootha Joyce as their George and Mildred Roper characters. The second spin-off was "Robin's Nest", which ran from 1977 to 1981 and featured Richard O'Sullivan as Robin Tripp (the basis of the Jack Tripper character), who runs the titular restaurant along with his live-in girlfriend and her antagonistic father.