Callum Scott Howells
— Henry Cyril Paget, 5th Marquess of Anglesey
Ruby Stokes
— Lily
Rupert Everett
— Gelert
Paul Rhys
— Lord Penrhyn
Louis Hynes
— Neville
Louise Brealey
— Lady Chetwynd
Tom Rhys Harries
— Nick Durant
Siobhán McSweeney
— Blanche
Guillaume Gallienne
— William
Steve Speirs
— Morris Price
Kevin Eldon
— John Wickens
Ian Puleston-Davies
— Mr Davies
Roger Evans
— Mr Tailor
Julian Lewis Jones
— Viscount of Gwynedd
Kate Drew
— Viscountess of Gwynedd
Leisa Gwenllian
— Clara
Michael Hill
— Emrys
Clara Paget
— Mabel
Anthony O'Donnell
— Mr Spinks
Ben Crystal
— Mr Thomas
John Pierce Jones
— Dr Roberts
Lisa Jên Brown
— Miss Jones