Thanks for your replies wrench1.
I get a better picture now.
I was initially trained under CAA Sect L (the old A&C & XE & XI & XR categories), then went on to EASA B1 B2 stuff.
Then I did some research on A&P.
From what I can see, they are both very different but yet is some ways similar...
In CAA / EASA, you study in quite detail on a specific 'small' topic (eg. airframe, physics, maths etc) but in FAA A&P you study not too detail, but it covers a lot more topics.