Knebworth House - profile made on its 500th anniversary - 1991

In the autumn of 1991, John Mansfield looks at the historic house Knebworth House, in Hertfordshire, England, on its 500th anniversary. Includes interviews with its then residents David and Chryssie Lytton Cobbold on the resposibilities of looking after the crumbling old house and the pleasures and pitfalls of opening it to the public and hosting its legendary rock concerts.