Is there an Old English -English dictionary available to buy in Britain which is purely a BRITISH book?

I ask because I am sick of searching for Old English - English dictionaries that are written and published by americans when clearly the americans have never even used Old English in their country as a first language!

I do not mean to offend any americans who are on here but you must see the point I am making coz your country has never used Old English as a first language.

So if anyone can point me in the correct direction I would be much appreciative thanks =D

Little Red Dragon

P.S. Reason why I ask is coz I am writing a fantasy book and need to use an Old English dictionary from time to time.

I would go down to the library and use theirs but that would clearly be wasting my time as I cannot afford to keep going backwards and forwards to look up words in an Old English dictionary!

And also Libraries have dumb policies that say you can only photo copy at least 5% of the dictionary if it is within 70 years of it's publication date (which I find rather stupid! I mean it just a dictionary for crying out loud!)