http://www.tonbridgecastle.org/cgi-bin/buildpage.p l?mysql=1
http://www.ghyllmanor.co.uk/weddings.asp
Try
these two. If you phone Crawley Register Office [438341] they'll put a list of venues in the post that you can marry in & stay there for the weding breakfast. Brighton pier is also available. If you type weddings in sussex / kent on MSN search & find the exact phrase in advanced search you'll get pictures too.
Also try Amberley castle - that's where I'm looking for my wedding.
There are loads of wensites that list different venues according to location - just try typing in "wedding organiser" in google or somthing.