Well, it's not a Double, it's a triple act.
Apparently, they hadn't worked together before, Ch4 just threw them together.
Adam says they've got a 'thing' they've just melded into an act somehow.
Oh, it did look like they really blindsided Alex with the East 17 thing, the way his face dropped, part way through the anecdote he could see he'd have to sing it.
I think the three of them have great chemistry.
I came across this on the 3rd day of the Paralympics.
I'd never seen Josh before and, even in by that stage, I didn;t think he looked comfortable but within a few days he was fine.
It will be interesting to see how they deal with the Oscar Pistorious story - because I think they must given the seeds of the show.