Dan Stevens Nick Guest Actor Tim McInnerny Gerald Fedden Actor Hayley Atwell Cat Fedden Actor Alice Krige Rachel Fedden Actor Carmen Du Sautoy Elena Actor Alex Wyndham Wani Ouradi Actor James Bradshaw Polly Tompkins Actor Oliver Coleman Toby Fedden Actor Lydia Leonard Penny Kent Actor Don Gilet Leo Charles Actor Christopher Fairbank Barry Groom Actor Saul Dibb Director Andrew Davies Writer Kate Lewis Producer Laura Mackie Executive Producer Martin Phipps Music