Hey, check out the Samsung in my thread here
Both Lenovo and Samsung have a £100 cashback scheme on certain models atm, so you can get a better machine for nearer your budget (also they're slightly cheaper on Amazon, around £570 - £630 after cashback)
The lenovo in my link is just a higher spec model than the one you found, having an i7 CPU and a Blu-Ray drive. But for the £130 difference in price, I dont think it's worth it.
The samsung, on the other hand, is pretty much the same spec as the on in your link, except it has a Matt screen and a slightly better graphics card. You'll have to decide yourself whether a £70 increase in price is justifiable.
I'd say the one you have there suits your needs perfectly, and go for that. I'm actually quite tempted with that one now! I didnt see that one in the list of laptops available for cashback haha