In reply to I like climbing: I might email them, just to make sure the point went home. The 2 staff I spoke to were perfectly reasonable, but I am not convinced that the message will be passed on.
Fortunately the bike was not attacked, while the damage to the lock was purely cosmetic. The stainless steel of the bar performed pretty well, and is just slightly polished where grinding attempts were made. So it is a bad idea to economise on a bike lock where you are going to leave it somewhere like the Westway, get the best lock you can.
I am a bit surprised that a dirty, vomit-yellow, oldish bike was attacked, especially in broad daylight.