Anyone an mot tester?

I want to add another string to my bow and become an mot tester .
I'm always seeing adverts in my localo rag for mot tester to cover holidays etc .

So i've read this
http://www.dft.gov.uk/vosa/repository/So%20you%20want%20to%20be%20an%20MOT%20tester.pdf

My question is it says i have to be nominated by an authorised examiner ..
Do i have to be working at a garage ?
I do work for nissan but don't want to let the boss know .

I did 5 years when i left school at a back street garage (13 years ago )and have been in the motor trade since then is this enough to allow me to take the course or does my expierience need to be recent
Anybody any hints or tips ?

no but you need to be sponsored by an authorised testing station ideally

So if a friend of mine owns his own garage/mot station but is 250 miles from where i live thats okay?

don't know tbh with you rob
think they would smell a rat tbh as your hardly likely to be working there even as a part time tester
think if I were you I would go to a local testing station on the island and ask them if they would mind sponsoring you for the test.
you could say to them that you will bring all your mots there and agree to pay them a certain amount for each mot you do, plus your willing to help them out on an occasional basis if there tester is out for any reason.
its no skin off there nose really to help you out and it maybe beneficial to hem