Allam won the Best Actor Olivier Award last year for his performance as Falstaff in Henry IV Parts 1 and 2. He won additional Olivier Awards for Privates on Parade and Money, and among his many other credits is originating the part of Javert in Les Miserables.
Carroll won the Best Actress Olivier Award for After The Dance at the 2011 ceremony. Among her many other stage credits are House of Games, See How They Run, and Arcadia.
As previously reported, Michael Ball and Imelda Staunton will once again host the Olivier Awards Ceremony to be held on April 15 at the Royal Opera House. The event will be carried on BBC television, radio and on the web.