Having not done much engine work to the small cc nc30's I dont have a valve spring compressor.

Could anyone point me in the direction of a good one that will fit? Have a feeling that the one at work will be way too big and I want my own one anyway.

it was only last week that I used one of these.
Did the job Ok

I'll second that, I use that one on my heads does the job great

Big g or sash clamp/cramp, and a cut out cheap spark plug socket, failing that buy a tool for the job