In reply to Clears:
I think most people would use a 50m rope for the In Pinn, some would make do with less. The climb is pretty straightforward.
For anyone that's interested, this is how the In Pinn segment was filmed.
A rope access technician climbed the route with a partner early in the day and preplaced a lot of the gear. He then spent the rest of the day at the base of the In Pinn asking people nicely not to take the gear out!
The bulk of the crew arrived at the In Pinn about 2pm but we didn't want to hold anyone up, so waited until about 6pm when the route was clear. The rope access technician then went back up and was seconded by the specialist cameraman Keith Partridge (Keith is the guy who filmed the Edge, Touching the Void, The Beckoning Silence, Top Gear Climber v. Car and many others). They took up a dynamic rope for the climbing and a static rope so Keith could lock off in position.
They were followed by Martin Moran, who brought up Nick Crane as a guide would take up any client. There was no other rigging involved for them. In fact the only extra bit of safety they had was when Nick Crane was being interviewed while belaying Martin. I'm standing just off camera also belaying in the unlikely event that Martin fell and Nick was distracted by the interview.
Once everyone was at the top, they just abbed off as normal. It took about two hours to do. There's a picture in my gallery of Martin and Nick on the route, but I've just uploaded another one of Keith filming the abseil.
Apologies to the climbers we held up for about 15 minutes while we finished off - hope the use of our abseil ropes and the water made up for it.