Recurring Guest Characters Alfie Boe 1 guest appearances Jessie Wallace 1 guest appearances Jon Culshaw 1 guest appearances Ben Miller 1 guest appearances Jason Manford 1 guest appearances Jamie Cullum 1 guest appearances Catherine Tate 1 guest appearances Beverley Knight 1 guest appearances Shona McGarty 1 guest appearances Kimberly Wyatt 1 guest appearances Adam Garcia 1 guest appearances Jamie Raven 1 guest appearances Katherine Ryan 1 guest appearances