The series - following the exploits of a British concert party in India during 1945 - ran from 1974 to 1981 and saw Davies appear in all 56 episodes, heading a cast which also featured Donald Hewlett, George Layton and Kenneth MacDonald. In 1975, the cast released an album to accompany the series, and Davies and his co-star Don Estelle scored an unlikely Number 1 hit with their single, Whispering Grass, and even performed the song on Top of the Pops.
In Coronation Street, he played a Returning Officer at the local council elections, at which Len Fairclough defeated Annie Walker in September 1966. He also appeared in You Can't Get Out Of The Wood, an episode of Street spin-off Turn out the Lights in 1967.
Other television work included roles in: Dixon of Dock Green, Redcap, Orlando, Talking to a Stranger, Adam Adamant Lives!, Softly Softly, Doctor Who, Z Cars, The Mind of Mr. J. G. Reeder, Nearest and Dearest, The Onedin Line, The Dick Emery Show, Crown Court, Hawkeye the Pathfinder, Bless This House, Sam, Terrahawks, Oh Doctor Beeching!, Vanity Fair, 2point4 Children, Gormenghast, Sunburn, Cor Blimey! and Casualty. He also scored a second major sitcom success playing antiques dealer Oliver Smallbridge in Never the Twain opposite Donald Sinden, from 1981 to 1991.
Film credits include: Murder Most Foul, Adolf Hitler: My Part in His Downfall, Carry on Behind, Not Now, Comrade, Confessions of a Driving Instructor and Carry on England.