Thanks all. I was in Debenhams looking for something else when I came to their very small luggage dept - well area. They had a large Tripp lightweight [4.5kg] suitcase reduced from £150 to £45. Went back today and bought it. Slight drawbacks - it's black with a fairly muted teal blue flower design [DH thinks I should have it] and it's quite deep [couldn't fit it in the boot of car without taking everything else out] Decided to keep one of our old cases and get rid of the enormous one.
Don't worry Stansgran, I won't be filling it. Hopefully all the things we're taking will be lightweight anyway. Well mine will be. Has anyone noticed that men's clothes weigh so much more than ours anyway? I'll only need something warm to actually travel to the airport and poss use on board if the air con is a bit fierce. I never know what to wear when travelling long haul, in order to arrive without looking totally wrecked. Not a good look if you're hoping for a possible upgrade for your hotel room. Maybe the new suitcase might swing it???