Who makes plum-pudding?

I am writing today with a rather unusual question.I am working as a journalist at the VIRGO FILM AG. It is a film and television production with headquarter in Munich,

primarily we produce documentation and reports for a different public and private TV provider in Germany.

In the context of the popular science show "Galileo", "Pro 7" ordered us to produce a film about the traditional "Plum pudding" in Great Britain.

Now to my question:

I'm now looking for a suitable location for the filming. It would be nice if we could film the preparation of Plum Pudding.

For this we need a restaurant or private home in Britain, where the traditional Christmas dessert is prepared.

It would be a great help to me, could you give me a contact or it would be you, who wants to help me.