Webster, due to retire in 1970 as general administrator of the Royal Opera House, decided that his departure should be accompanied by a change to the leadership of the two companies. Georg Solti, musical director of the opera company, was keen to concentrate on his new post as conductor of the Chicago Symphony Orchestra, and did not wish to renew his Covent Garden contract when it expired in 1971. Ashton had frequently told colleagues how he looked forward to his own retirement, but nonetheless was hurt by the abruptness with which his departure was arranged and announced by Webster. He stood down in July 1970 after a farewell gala organised by Michael Somes, John Hart and Leslie Edwards.
After his retirement, Ashton made several short ballets as pièces d'occasion, but his only longer works were the cinema film, The Tales of Beatrix Potter made in 1970 and released in 1971, and A Month in the Country (1976), a one-act piece, lasting about forty minutes, freely adapted from Turgenev's comedy of manners. The piece has been revived regularly, in every decade since the premiere.