Guest Stars David Wilmot as Sgt. Donald Atherton Anna Burnett as Mathilda Reid Josh O'Connor as PC Bobby Grace Alicia Gerrard as Charity John Heffernan as Ronald Capshaw Richard Goulding as Edgar Morton Sophia La Porta as Juniper Kohl Jason Manford as Alex Le Cheyne Philip Arditti as Ezra Marvell Georgina Rich as Olivia Wakefield Philip Judge as William Wakefield