Would this mix work?
I don't have access to a plain yellow cake mix in the UK. It's either that one, the BC Devils Food cake or BC Carrot cake.
Also, on all my cakes I use ganache. What should I use for a competition cake? I need something that hardens up. I can't cover cakes with fondant if I use buttercream (far too soft), so any suggestions would be great! Need to keep this a cheap as possible.
The rules for the competition that I want to enter are that everything must be edible. No artificial decoration of any kind. I actually made a thread, if anyone can help with my other questions?
I looked through your link, and rather than messing around with a chocolate swirl cake mix, I'd use the Sainsbury vanilla celebration cake mix for this. Its cheaper than the BC mix too. Have you tried the British Sugar Guild message board for cake competion advice? They should have all the do's and don'ts you need to know.
British Sugar Guild link. Best of luck!