- James Corden
- Paul
- Alexandra Roach
- Julz
- Julie Walters
- Yvonne
- Colm Meaney
- Roland
- Mackenzie Crook
- Braddon
- Valeria Bilello
- Alessandra
- Trystan Gravelle
- Matthew
- Sion Tudor Owen
- Choirmaster
- Jemima Rooper
- Hydrangea
- Alex Macqueen
- Dr. Thorpe
- Miriam Lucia
- Signora Fiorentino
- Stanley Townsend
- Luciano Pavarotti
- Maria Del Monte
- Alessandra's Grandmother
- Duccio Camerini
- Alessandra's Father
- Luca Fiamenghi
- Gerhardt
- Giandomenico Cupaiuolo
- Italian Language Teacher
- Stefano Sparapano
- Combat Professor
- Christopher Bull
- Young Paul (Age 9)
- Ewan Austin
- Young Paul (Age 14)
- Ieuan Chakrabarti-Adams
- Young Matthew (Age 9)
- Rhys Coxley
- Young Matthew (Age 14)
- Sally Scott
- Female EMS Worker
- Di Botcher
- Nurse
- Morgan Walters
- Male EMS Worker
- Jason May
- Emcee
- Simon Naylor
- Hooligan
- Ed Gaughan
- Audience Member #1
- Grahame Fox
- Audience Member #2
- Dan Wilder
- Drummer
- Robert Gwyn Davin
- Guitarist
- Alex O'Neill
- Band Member
- Triserial Abgott
- Band Member
- Ceri Mears
- Steel Worker
- Philip Howe
- Foreman
- Ann Beach
- Elderly Woman
- Gareth Gwyn-Jones
- Elderly Man
- Melanie Kilburn
- Mrs. Evans
- Abigail Hamilton
- Mrs. Cosgrove
- Lee Mengo
- Store Detective
- Dafydd Hywel
- Vicar
- Helen Griffin
- Julz's Mum
- Kylie Watt
- Aida
- Martin Nelson
- Aida Baritone
- Simon Coleman
- Stagehand
- Kathryn Drysdale
- Production Asst. #1
- Reggie Yates
- Production Asst. #2
- Asli Bayram
- Julia
- Villa Kula
- Punk Girl
- Airlie Scott
- Mrs. Buncle
- Matthew Ashforde
- Stage Manager
- James Ashton
- Announcer
- Shawn Aldin-Burnett
- Talent Show Punter
- Mai Arwas
- Margarita
- Claire Ashton
- Audience Member
- Roy Beck
- Audience Member
- Arthur Benjamins
- Cheering man
- Hannah Blamires
- Audience Member
- Dilyana Bouklieva
- BOOTS Customer
- Paul Castleman
- Emergency Services Worker
- Siong Loong Choong
- Audience Member
- Bern Collaço
- Pub Guest
- Pamela Betsy Cooper
- Audience Member
- Simon Cowell
- Self
- Chris Cowlin
- Audience Member
- Renee Daly
- Pub Customer
- Alessandro De Marco
- Daniel
- Leigh Dent
- Pub Guest
- Declan Donnelly
- Self
- John Duggan
- Passerby
- David Ellis
- Street Character
- Raymond Glen
- Theatre Goer
- David Golt
- Theatre Audience
- Donna Griffiths
- Wedding Guest
- John W.G. Harley
- Talent Show Punter
- Shane Hart
- Orchestra
- Marina Hayter
- Pub Guest
- Amanda Holden
- Self
- Tony Honickberg
- Late Arrival Audience Member
- Owen Hunte
- Friend in Bar
- Angie Inwards
- Audience Member at Working Mans Club
- Martin John King
- Audience member
- Chonradee Kulthap
- Audience Member
- Semina Lewis
- Woman in Bar
- Simone Liebman
- Talent Show Punter
- Kristina Linder
- Woman at the Opera
- Barrie Martin
- Audience Member
- Martyn Mayger
- Audience Member
- Matthew David McCarthy
- Audience Guest
- Ross McKinnon
- Pub Guest
- Anthony McPartlin
- Self
- Piers Morgan
- Self
- Jon L. Morris
- Audience Member
- Stuart Mulcaster
- Paramedic
- Gino Picciano
- Contestant
- Martin Poole
- Trumpet Player
- Nick Pratt
- Shopper / Rambler (uncredited)
- Prince Philip
- Self
- Queen Elizabeth II
- Self
- Santi Scinelli
- Contestant
- Grace Sinclair
- Aida Cast Member
- Mick Slaney
- Audience Member
- Giles Spencer
- GBT Audience Member
- Carl Sykes
- Steelworker
- Amy Jean Thomas
- Passerby
- Fabio Vollono
- BGT Audience Member
- Julie Vollono
- BGT Audience Member
- Jon Wennington
- Talent Show Punter
- Brandon Whitt
- Buncle son
- Evan Whitt
- Buncle son
- Maisie Whitt
- Buncle daughter
