Just seen this pop up on UKhotdeals. I brought one of these last year and used all over winter up to 5 hours a week . Seems very good for those on a budget.
http://www.hotukdeals.com/deals/ultrasport-cycle-training-machine-amazon-39-34-2193250
http://www.hotukdeals.com/deals/ultrasport-cycle-training-machine-amazon-39-34-2193250