Andy,
Deans are not a big company actually and for three days this weekend and three last weekend they have been at the Sandown and Warwick shows so they may be a bit behind with things. I did speak to Ron Dean yesterday at Warwick and he told me things were very hectic, it was in fact quite hard to get anywhere near his stand for most of the day.
I don't normally have any problems in getting a response from Deans by email but I prefer to email the contact address direct rather than use the online form as in my experience, and that of others, these things don't always work the way they should!
If you haven't got a response by midweek, try phoning if you can as they are normally very helpful.
Colin