Tablet recommendation

Looking for a android tablet recommendation .With a good resoultion screen.
Going to be used for reading PDF/textbooks and also watching videos.10" screen would be preferred.
Needs to be less then £200 so good value is a key aspect.
Any recommendations would be great.
Thanks

My friend swears by his Nexus 9, I'd take a look at that maybe.

Nexus 9 is a good way to go. Priced well, performs, and google doesn't usually hamstring their hardware when the version comes out.