In reply to Lankyman:
Thanks for the info, I wonder if I go there whether I should just knock and ask if they have any problems if I climb there (as a matter of courtesy), or whether to just climb there until told otherwise.
Yes, I've been to Tow Scar a few times (and Back Tow Scar), nice place. Shame there's not a way to pull up new areas / routes that have been added to the Leedswall database since I last looked a couple of years ago, am sure there's probably more been developed up there. So much good rock there it's amazing.