Digital, here's the contact information for my Shidoshi's schools. I was in a branch dojo in Berlin, but I know there are at least 30 dojo's throughout the UK. If neither of these are close, let me know where you are and I can probably locate a school close to you. Brin is former SAS, and an awesome instructor.
Shadow Warrior Ninjutsu Society (Chester and London)
Brin 14th dan and Natasha Tomarkin Morgan 14th dan
Tom Iddon 10th Dan Ray Price 8th dan Andy Tenn 8th Dan
PO Box 22; Rock Ferry, WIRRAL, Merseyside l42 4RR
phone: (+44) 151 644 6137
Edit to add web link: http://www.togakure.co.uk/