Wow, thanks everyone for the welcome, advice and the quick replies
Unfortunately money is going to probably be an factor, but having said that both the Cat's eye ones and the Orion Collimating eyepiece are both within my budget.
With the cat's eye cheshire kits, are these the one's people meant?
http://www.catseyecollimation.com/cekit1s.jpg
I did a fair bit of reading about what you can use before posting, but to be honest I was a bit bamboozled by all the information
This has helped a lot, ta.
Kind regards
Ant