In reply to dking02:
New I very much doubt (other than second hand or clearance sale prices) if you will get a pair of B1 boots for under £200.
Do you need to be able to wear the boots with crampons? If not you would be looking at a BO boot which gives you lots of choice around £100, although for good ones you're probably looking closer to the £200 mark.
Post edited at 10:32