Recurring Guest Characters Alexander Armstrong 1 guest appearances Nigel Benn 1 guest appearances Michael Gove 1 guest appearances Rebecca Ferguson 1 guest appearances Gregory Porter 1 guest appearances Stef Reid 1 guest appearances Barbara Dickson 1 guest appearances Dolly Parton 1 guest appearances Desmond Tutu 1 guest appearances Tony Blair 1 guest appearances Sheila Hancock 1 guest appearances June Brown 1 guest appearances Clarissa Dickson Wright 1 guest appearances Jesse Jackson 1 guest appearances Cliff Richard 1 guest appearances Ann Widdecombe 1 guest appearances Katherine Jenkins 1 guest appearances Russell Watson 1 guest appearances Brian Blessed 1 guest appearances Alfie Boe 1 guest appearances ⇤ « 1 2 » ⇥