Recommend me an exercise bike

[Legacywr]

I want to buy a good one, either used or new, maybe £3-400!?

[rog007]

My local bike shop has bikes for £50! Add on some high quality lights and jobs a gud un. Fitness and fresh air!! If you really must stay indoors, then simply buy an indoor trainer:
http://www.cyclexpress.co.uk/Products/M_70R_Indoor...
and use the money you have saved on a weekend away. Simples!