[Neil Jones]

It was filmed apparently over 14 days in June last year, and at an eleven part series (and 7hrs per recording as per above) suggests it may have been one show per day, and then maybe some pick-ups either at the end or somewhere along the line.

Back in the 90s they apparently used to film two shows a day, though IIRC the first series was relatively shorter compared to later ones where it pretty much ran for four months in the autumn.

IIRC there were two events that were fixed in the original show - The Wall and you could sometimes see the rings from Hang Tough floating around in the background of the shot, which suggests some sort of rig you can just raise/lower as required.