In reply to windjammer:
Go into your local Cotswold Outdoor store. In know for a fact that within the company they do stock B2 boots that will go up to a size 13.
They may not immediately be available at your local store but they can transfer footwear between stores for you to try at no cost or obligation to buy.
It will be worthwhile whilst you are in the store getting your feet properly measured to check on the width etc of your foot.
It is difficult for anyone to recommend a boot without knowing your foot!
Hope this helps.
AD