This may be a recent entry in the list (I know that we have discussed Antler before, and I looked at John Lewis for this thread, but I don't recall this one)
http://www.antler.co.uk/revelation-w...-cabin-suicase
http://www.littlewoods.com/revelatio...1184078009.prd
The larger size (ie American common carry on size) claims to be 2,1 kg, lighter than the Travelite Delite. But again, I'm not thrilled with the design. It would be great if someone besides Rimowa could come up with both lightweight and attractive luggage.