Recurring Guest Characters Seann Walsh 2 guest appearances Andrea Bocelli 1 guest appearances Birdy 1 guest appearances Tommy Tiernan 1 guest appearances Cyndi Lauper 1 guest appearances Ronan Keating 1 guest appearances Tony Hadley 1 guest appearances Meghan Trainor 1 guest appearances Jarlath Regan 1 guest appearances Billy Ocean 1 guest appearances Ben Hanlin 1 guest appearances Rachel Platten 1 guest appearances Julian Ovenden 1 guest appearances Paul Sinha 1 guest appearances Beverley Knight 1 guest appearances Al Murray 1 guest appearances Jack Savoretti 1 guest appearances Craig David 1 guest appearances Caro Emerald 1 guest appearances Alistair McGowan 1 guest appearances ⇤ « 1 2 » ⇥