Given my preference for Poly it only seems fair to list a timber National manufacturer especially other than one of the big three.
Pete Little is know to me personally and I have also hands on experience with his cedar National Hives. They are beautifully crafted and I use those words in the technical sense.
His website can be found here: http://www.exmoorbeesandbeehives.co.uk/
I have no personal experience with his bees but have read that they are widely considered to be good.