I have me one of these..
http://www.thehopstop.co.uk/pd_1028_...ilot_case.html
It's on wheels (LHR is a big place to lug a bag around) and has a laptop compartment as well which will be useful I imagine. Plus it's guaranteed and it's made of hard wearing stuff. I throw it around in my car and my house and doesn't mark very easily! Not leather it's synthetic but it's a good case.
Horgy