Check out the BAA web site (
www.aikido-baa.org.uk) for all the news. It is a grouping of all the Tomiki and Shodokan clubs within the UK. It's quiet active.
There are some clips at the JAA web site homepage2.nifty.com/shodokan/en/kyogi10.html which show Nariyama shihan doing the 17 randori no kata.
There are some clips of the last world championship at
www.wakefield-aikido.co.uk/multimedia.htm?
If you are close to one of the Shodokan/Tomiki clubs, then feel free to just pop in and train. It'll show you a bit more what it is like. Certainly, if you (or anyone here) is in York at any point, please come and train.