Apple care for a Macbook is £199 from the Apple Store. It's like £140 on dabs which is pretty good..
I'm still in two minds whether to look at Apple Care. Going on my MBP, I had a repair done 3 times, but it was all within the first year. I think for £140 it's probably worth it?
I got 3Yrs hardware warranty free when I bought from Higher Education. The extra £60 was for phone support, but I didn't need it - I just went straight to a local repair centre.