Re: British Seminars ?
The next Shodokan ones are in London and this November. Have a look at the BAA web site (google for it) and there should be something there.
Alternatively, try the BAF as they are running things quiet often. Oh, Edinburgh is running many things as well... both the Shodokan club there and the Imawa. Alternatively, check out where and when people are training and make a weekend of going to regular classes. Check Edinburgh and train in Aikikai, Imawa and Shodokan in one weekend on top of seeing the city...
Or orginise one. I'll be happy to come and teach if you can't get Scott or Jon or Jim to come -- since they are all 5th dan and I'm a measly first, I would recommend asking them first!!!