The piece stars Summer Strallen (Love Never Dies, Mary Poppins) and Tom Chambers (winner of BBC TV's "Strictly Come Dancing" and star of TV's "Holby City" and "Waterloo Road") in the roles played in the film by Rogers and Astaire, respectively.
The show is directed by Matthew White (Sweet Charity and Little Shop of Horrors for the Menier Chocolate Factory, both of which transferred to the West End) and choreographed by Bill Deamer (Evita on tour), with orchestrations by Chris Walker. It was adapted for the stage by White and Howard Jacques, based on the screenplay by Dwight Taylor and Allan Scott. It is produced by Kenny Wax Ltd, based on the RKO Motion Picture.
Here's a look at the production:
Irving Berlin's Top Hat, With Summer Strallen and Tom Chambers, Tours the U.K.