Guest Stars Paul Popplewell as Paul Pegg Adam Sina as Marcus Fidel Kriss Dosanjh as Ashok Masum Richard Harrington as Jonty Buchanan Emilio Doorgasingh as Nadeem Bashir Shobu Kapoor as Mona Nadkarni Sophia Capasso as Maisy Sherwood Daniel Millar as Damien Beddow Jennifer Preston as Dr Webber Sam Oladeinde as Sam Dyer Jasmine Naziha Jones as Emma Shaw Siân Davis as Alexandra Croft