Michael Harrison's West End musicals include: The Drifters Girl at the Garrick, two seasons of Joseph and the Amazing Technicolor Dreamcoat at The London Palladium, Mel Brooks' Young Frankenstein at the Garrick, Annie at the Piccadilly, Mrs Henderson Presents at the Noël Coward, Gypsy at the Savoy and The Bodyguard at both the Adelphi and Dominion theatres.

Michael's upcoming productions this year include: Crazy For You at the Gillian Lynne Theatre, The Wizard of Oz at The London Palladium and Oklahoma! at Wyndham's Theatre. He produced Disney's Bedknobs and Broomsticks on tour in the UK.

Michael's London Palladium pantomimes: Jack and the Beanstalk, Pantoland, Goldilocks and the Three Bears, Snow White, Dick Whittington and Cinderella, have proved to be huge popular hits, with Dick Whittington winning the Olivier Award for Best Entertainment and Family.

He is Chief Executive of Crossroads Pantomimes, responsible for many of the major number-one pantomimes across the UK.

In 2022 with Andrew Lloyd Webber, he formed Lloyd Webber Harrison Musicals to produce both new musicals and revivals of Andrew's existing work.

Michael was awarded a companionship to the Liverpool Institute of Performing Arts by Sir Paul McCartney and the Freedom of the City of Newcastle upon Tyne in recognition of his services to theatre in the region.