We got the Mothercare Spin and thought it was excellent; relatively light and compact, feels very stable and corners well whilst pushing, folds easily with one hand whilst you're holding baby, you can turn it from front to rear facing without having to take anything apart or even take baby out, and the carry cot actually turns into the seat when they're ready so you're not left with a bulky carry cot to put in a cupboard somewhere. We went with a MaxiCosi car seat rather than the compatible Mothercare one, though.
If I had one tip about buying a pram, here it is: If you're after a travel system, pick your car seat first and get the pram to match that. I personally believe that getting the right/safest car seat is the most important thing (or at least gave us the most peace of mind), so it's better to get that right and see what prams will match than to pick your pram first and find your car seat options restricted.