Instructions:Saw this in yesterdays Sheffield Star which I doubt any1 else saw because its a god awful paper
Anyway, it said on Mon-Fri bookings you can get two for one if you use code SHE743. Or quote 'Star' when you ring up. Erm, not got the paper with me atm but I'll update expiry etc when I see it again.
I've never been to this but people say it is good if you like that sort of thing so maybe of interest to some1.