Cheers wantmygti! I'm in Manchester and it did cost a fair whack but to be honest I'm happy I got it done.
I had paint correction done due to the swirl marks (showing even on a white car) and then a Nanolex ceramic coating applied. It was about £350 for correction and £500 for coating but 15% discount to do both. I then spent the discount (and more) on internal sealant, all glass coated, two set of wheels treated etc.
My wife says I have more money than sense but I'm definitely keeping this one (she's heard that before though).