English previously understudied the roles of Max Bialystock and Leo Bloom in this production. He recently appeared in the West End revival of Guys and Dolls. His Broadway credits include Gypsy, Guys and Dolls, Damn Yankees, Hello, Dolly! and A Funny Thing Happened on the Way to the Forum.
Shearsmith is best known for being part of the comedy group The League of Gentlemen. He has appeared in the West End as Yvan in Art and Jaques in As You Like It.
McDowall was part of the original London company of The Producers. In addition to her ensemble track, she understudied the role of Ulla.