The Sweeney - Season 1 Episode 13 -

Jack Regan's tip off of a robbery lead him to close to the action, so the gang planning the robbery kidnap Jack's daughter to use as a hostage, to keep Regan off the scent of the action until they make a getaway. Regan wants his daughter back so takes it in his own hands to track down his daughter and to prevent the robbery, going against his ex wife, the orders of his bosses and the detective investigating the kidnap.