SPOTTED: Is that Lulu counting the beats whilst waiting on the stairs?
Good one. Now thats something else ive never spotted before. I'd suggest as shes lowest down on the stairs shes acting as the look-out and basically telling the girls when to go once Patti has skated past. Those on top wouldn't be able to see otherwise and no good them counting beats as it all depends on Patti's timing on the skates. Notice just before Lulu speaks out, Pauline glance upwards, presumably to a monitor.
Comment: I can just picture the scene when FC gathered the girls together for rehearsing this routine. FC to the girls "Any of you any good at roller skating" , Patti to FC "Yeah im not to bad", FC to Patti "Stick these on then, you've landed the role".
OTHER SPOTTED: The first outing for those stairs. They become a fixture on TOTPs for around the first 3 months of 1980 with many of the performers utilizing them.