I have recently moved into a new house, and been decorating. Well when
I was painting my walls I removed the plug sockets and put them back as
before well I noticed that the red wire was going into neutral and
black was going into live. Whereas in this diy readers digest book it
says that red is live and black in neutral so I followed readers digest
book and it still works?

Is is possible for it to work either way?

I also noticed this on the light switch and I have put it the way the
book says. black = neutral red = live.

Am I doing this right, or should I keep it the way it was?