In reply to foxjerk: Are you after one rope or a pair? Do they need to be dry treated?
The best deals are generally for pairs (e.g. Urban Rock), but I have spotted of couple of clearance bargains on individual ropes at Go Outdoors:
If you are anywhere near Kidderminster or Colchester the Go Outdoor stores there have Mammut Meteor 8.3mm (superdry) on clearance for the crazy price of £69.96 -
http://www.gooutdoors.co.uk/mammut-meteor-60m-rope-p263320
They also have the dry treated Edelrid Apus 8.2mm on clearance and available for home delivery for £89.97 -
http://www.gooutdoors.co.uk/apus-60cm--p166220
Finally, Outside have fairly decent prices on Genesis 8.5mm (coating finish) at £129 -
http://www.outside.co.uk/shop/Genesis+8.5mm