Guest Stars Caroline Langrishe as Sheila Barr Vincent Regan as Monty Jones Nimmy March as Jane Walters Dominic Rowan as Sylvan Dubois Siân Reeves as Olivia Jones Ace Bhatti as Karim Khan Mathew Bose as Paul Abbasi Oliver Llewellyn-Jenkins as Rhys Davies Elen Rhys as Eirwen Jones