Olrich joined The Sadler's Wells Ballet (soon to become the Royal Ballet) in 1949 under
Ninette de Valois. She danced with the company in London from 1949 to 1954, in
The Sleeping Beauty,
Les Sylphides,
Coppélia ,
Façade, ''
Mam'zelle Angot, Swan Lake, Cinderella
, Checkmate
, A Wedding Bouquet
, Apparitions
, A Mirror for Witches
, Bonne-bouche
, Ballet Imperial
, Giselle
, Don Juan
, The Three-Cornered Hat
, Job
, Daphnis and Chloe
, Ballabile
, Veneziana
, Homage to the Queen
, Tiresias
, and Les Patineurs''. After her ballet career, she remained on the London stage as a performer. Olrich appeared in
Pay the Piper (1954–1955),
The Balcony (1957),
Honeymoon (1957), the musical
The Boys from Syracuse (1963), and the South African folk revue
Wait a Minim! (1964–1966). She accompanied
Wait a Minim! to Broadway from 1966 to 1967. In New York, she won the Whitbread Anglo-American Theatre Award for Outstanding Musical Performance. Theatre critic
Frank Rich (then a Harvard undergraduate) admired Olrich's appearance, saying, "Then there is April Olrich, who dances and, when she has nothing else to do, just stands facing the audience flashing a pair of large, sparkling eyes. The eyes are part of a body which also seems to throw off a few sparks from time to time." She also appeared in many films including
Women without Men (1956),
Battle of the River Plate (aka
Pursuit of the Graf Spee) (1957)
Kill Me Tomorrow (1957),
Room at the Top (1959),
Deadly Record (1959), ''
It's All Over Town (1964), The Skull (1965), Clinic Exclusive (1972), Keep It Up Downstairs (1976), Riding High (1981), and Supergirl (1984). She is probably best known for playing the female lead, Madame Petrovna, opposite Morecambe and Wise in the film The Intelligence Men'' (1966). She frequently appeared on British television in both dramatic and comedy roles, most notably an episode of
The Avengers (1963),
Fresh Fields (1985),
She-Wolf of London (1990), and as a game-show panelist in the popular series
Whodunnit? (1976). ==Personal life==