hey mate welcome to the club. I'm green weak too and unfortunatly fail the beyene test, in a very unfair way I personally think, but thats another story.
There is no other beyene lantern in the UK i'm afraid. City uni used to have one for their CVD pilot research but that is the same one that is now at gatwick.
France is your best bet. Its a french lantern and also used by their CAA equivlent for CVD testing. My plan is to hopefuly togo france to get my class 1 (there a JAA state too) and so pass the test!
Hope this helps. Feel free 2 ask any questions you want.