I believe there is Hakuho Ryu (technically an offshoot of DR, but you still do the waza and a very legit organization) around the London area:

http://www.hakuho.co.uk/hakuho-uk-dojos.htm

Good luck,
--Chris
_________________________
"Seek not to follow in the footsteps of the men of old; seek what they sought."
--Basho