You are too late James. The whole thing was filmed the first couple of weeks in June.
I can't believe they are offering £25k in prize money, that seems a lot to give away. I would have thought most contestants would have done it for a top the range smoker, £1000, or a whistle stop tour of some BBQ/Smoker joints in the US.
I have just emailed them to see if they want any Smoking Wood, He Who Dares and All That