Sound advice.

I will try out a Brompton but the price and small wheel size do put me off a bit. The Birdy looks interesting as the frame doesn't actually fold, just the wheels but at over £1000 for the basic bike, that's way way off my budget and I'd guess a secondhand Birdy will cost me at least £500, which I'd rather not pay for a secondhand bike.

Thanks to everyone for their feedback.

Johno