He also appeared in Fawlty Towers, Cluedo, The Good Soldier (an adaptation of the Ford Madox Ford novel), Elizabeth R (playing Essex), The Moonstone, Bel Ami, Sense and Sensibility (which also featured Clive Francis), The Casebook of Sherlock Holmes, She Loves Me (in which he sings) and Blue Remembered Hills (written by Dennis Potter).

In that repertory company he appeared in 'Tis Pity She's a Whore, Ruling the Roost, The Way of the World, The Wood Demon, The Bacchae, Tartuffe, King Lear and Knots (based on the R. D. Laing book).

Ellis co-starred with Lee Remick in the Merchant Ivory film The Europeans (1979), based on the novel by Henry James, playing the role of John Acton.

[citation needed] He has narrated documentaries, including Fall of the Wall, The Second Russian Revolution, The Death of Yugoslavia and End of Empire.

[2] In 2021, he played the Ghost in an online production of Hamlet, produced by the Gorilla Repertory Theater in New York, which was scheduled for completion in autumn 2021.

His fourth cookery book, Robin Ellis's Mediterranean Vegetarian Cooking was published in June 2020 by Little, Brown UK.