It is multi region, and both R1 and R2 were in B&W. However, found out what the problem is. When switching to AV2 via the TV remote, it is B&W, if I press again, it then turned to colour, so it was just down to user error!
However, now been watching some DVD's, and on certain shots (think it's dark backgrounds), seem to have 'wavey' lines going from bottom right to top left.
Any ideas??