Downton Abbey actor Jim Carter tells Matthew Parris why skiffle king Lonnie Donegan is his hero.

Lonnie Donegan is probably best remembered for the novelty hits "My Old Man's a Dustman" and "Does Your Chewing Gum Lose its Flavour? " However, early hits like "Rock Island Line" were instrumental in inspiring the likes of John Lennon, Brian May and Roger Daltrey to perform.

Donegan played a decisive role in the development of British popular music. His revitalisation of skiffle provided the inspiration for the whole British beat movement that was to come. Ironically, although Donegan was the catalyst, he was soon eclipsed by the young electric guitar heroes of the mid-sixties, and he was left with the comedy and cabaret circuits.