Good old Pashleys
Chaps
I bought one of these nearly eighteen months ago.
http://www.pashley.co.uk/products/classic/paramount/specification.html
It has a 5 speed twist grip hub gear which most people overlook.
They are dead reliable and the big advantage is that you can change gear when walking the bike or even when it is stationary.
I can go from top to bottom in less than one second.
It requires bugger all maintenance and you can drop the bike and not worry about damage.
Overall a brilliant and reliable system.
Regards
Mick