Have a look on MESH Computers - I've never dealt with the Laptop side of things but have been running my desktop for well over three years now and up to now have not had a problem. My mate has one which is still going strong after close to nine years!
no offence... but mesh are poo... they're just a mall version of dell... there not a very good brand, its nice to hear of people that have bought pc's of them that work past the 1st 6months let alone past the 12month warranty!
avoid pc world too (currys is the same shop) they have no idea what they're talkin about and are all about try to make profit from idiots...
...HP laptops are ok but their customer support is 2nd to none!
my choice would be toshiba!.. ive owned a fair few in the past (new/2nd hand) and they're just so... so... well simple!..
compatibility is never a problem, drivers are always easy to find, rugged, out last pretty much every laptop ive ever seen
get yourself a nice 17" laptop with an in car adaptor too