When Dorset postman Clive Peacock is forced into early retirement, the years ahead look bleak. But on his last day in the job, in a moment of unexpected rebellion he makes a decision that will change his life. As he makes his final collection from the postbox in the small seaside town where he lives, he decides to deliver the letters himself, by hand, no matter the destination. Mounting his trusty bicycle, he sets off on what proves to be an odyssey of self-discovery. Pursued by the police and lionised by the media, Clive becomes both a fugitive and a reluctant hero.

Set during the 1960s in the fictional North Yorkshire village of Aidensfield, this enduringly popular series interweaves crime and medical storylines.