
Hi,
You may be able to find a club near you on
http://www.agilitynet.co.uk - look under clubs - you can sort by region/county.
If he is KC registered you do not need to register on the activity register - it is only a dog that isn't KC that will need to be registered on the activity register.
Think on that web there is a link to shows too.
Good luck,
Rachel
p.s. don't know much about measuring as haven't started competing yet! But am sure if you get into a club they can help - if not someone else on here I'm sure will know.