Polycarpou and Stinton play Vernon Hines and Hasler, respectively, with Gary Wilmot taking over the role of Vernon from 2 June.
The Pajama Game opens at the Shaftesbury Theatre on 13 May (previews from 2 May), playing until 13 September 2014.
The cast also features: Alexis Owen Hobbs (Gladys), Claire Machin (Mabel), Eugene McCoy (Prez), Siôn Lloyd (Max), Jennie Dale (Mae), Sharon Wattis (Poopsie), Keisha Amponsa Banson (Brenda), Lauren Varnham (Charlene), Jo Morris (Rita), Nolan Frederick (Charley), Richard Jones (Frank), Dan Burton (Earl) and James O'Connell (Joe).
Michael Xavier will perform a song from The Pajama Game at the WhatsOnStage Awards Concert next Sunday (23 February) - click here for tickets
Come on our hosted WhatsOnStage Outing on 8 May and get a top-price ticket, free programme and access to our exclusive post-show Q&A with the cast all for £34.50
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