Here are some of his notable projects:
Films:
* The Ghost Goes West (1936) - As the vicar
* The Stars Look Down (1939) - As the pub landlord
* The Goose Steps Out (1942) - As Mr. Jones
* The Day of the Triffids (1962) - As Bill Masen
* The Wrong Box (1966) - As the policeman
* The Charge of the Light Brigade (1968) - As Lord Cardigan's Aide-de-camp
* Dad's Army (1971) - As Private Godfrey in the film adaptation of the sitcom
Television:
* Dad's Army (1968-1977) - As Private Godfrey, a recurring role in all nine series
* The Adventures of Robin Hood (1955-1960) - As Friar Tuck
* The Wednesday Play (1964) - As the old man in "The Offer"
* The Avengers (1961-1969) - As various characters in multiple episodes
* Doctor Who (1963-1989) - As the shopkeeper in "The Aztecs" (1964)
* The Newcomers (1965-1969) - As Bert, a recurring role
* The Likely Lads (1964-1966) - As Mr. Barlow in various episodes
* Man at the Top (1970-1972) - As Joe in various episodes
This is not an exhaustive list, but it highlights some of Arnold Ridley's most notable work in film and television.