Just came across this site that I got the address from out of this month's "Sky at Night" magazine, for focusers. They're from a company called MoonLite Telescope Accessories. Don't know how well made the focusers are but from what I've seen they look pretty good. Nice colours!!!!
Here's the URL, if you want to take a look at them. Who knows, you may end up buying one!!!
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http://www.focuser.com/index.php