He was one of many writers who worked on the script of A Yank at Oxford starring Robert Taylor and Vivien Leigh, the film in which his son Jon made his screen debut, and on Caravan.

[17] His play Heat Wave, written in collaboration with Denise Robins, was produced at the St James's Theatre, London, in 1929.

Back in England he wrote Murder on the Second Floor (1932); Love Me, Love My Dog (1932); Postal Orders (1932); Impromptu (1932); Help Yourself (1932); A Voice Said Goodnight (1932); A Letter of Warning (1932); The Silver Greyhound(1932); Illegal (1932); Blind Spot (1932); Sleeping Car (1933), for Anatole Litvak; The Ghoul (1933) with Boris Karloff in the lead and The Crucifix (1934).

He appeared in The Day Will Dawn (1942), Talk About Jacqueline (1942), The Gentle Sex (1943), The Halfway House (1944), They Were Sisters (1945), Nightbeat (1947).

In addition, he also wrote Jeannie (1941), Breach of Promise (1942) (which he also directed), Talk About Jacqueline (1942), The Gentle Sex (1943), The Lamp Still Burns (1943), The Night Invader (1943) and The Halfway House (1944).

Pertwee went to Gainsborough Pictures to work on the melodramas Madonna of the Seven Moons (1945), They Were Sisters (1945), Caravan (1946), and The Magic Bow (1946).

In 1954, he and his elder son Michael created The Grove Family – generally regarded as being the first soap opera on British television[25] – for the BBC.

Having previously written an episode of Douglas Fairbanks, Jr., Presents, this marked Pertwee's second and final foray into television writing.

Pertwee also wrote works of juvenile fiction, including the series The Islanders, which serves up typical Boy's Own adventure with a strong field sports theme.

The Islanders (1950) and Rough Water (1951) tell the adventures of three boys with the run of a sporting estate in the wild Devon countryside during a summer holiday.

The third book, Operation Wild Goose (1955), takes place some years later, on a trip to Iceland, where the boys come up against Russian spies, in between landing fat salmon.

classics and have been anthologized in the book, Fisherman's Bounty, edited by Nick Lyons, and originally published by Crown in 1970, then by Fireside in 1988.