The strains are starting to show in Polson's marriage, not helped by the fact that it is his fifth wedding anniversary while he is away on a two week course that will decide whether or not he becomes a sergeant. Meanwhile, Hodge has been invited to Kirsty's birthday party and Laura is going out on a business lunch with Greg Scarry.

• Tim Firth

• Holliday Grainger
• Ralph Ineson
• Alistair McGowan