In reply to flopsicle:
Noodeled abut on there in the 80's, very rare to see anyone else ... . Never saw a topo or talked to anyone who knew any established problems apart from the challenge to climbing directly to each supporting post on the metal fence above, they get spicier and a little harder as you go from right to left IIRC but its 30 years ago ... the traverse is OK for stamina but the rock is soft and not great quality and things tend to change, remember it will be more fragile after rain, watch out for canine 'landmines', keep spare gear with you or the LH end as you traverse don't leave it laying at the low end or it may be rehomed... Always preferred TB for stamina, better rock and it was quality training especially before they sandblasted the main tunnel walls
Terrace wall at Notts Uni also excellent for stamina work - enjoy