UKC

Don't recognise the quarry, and I live near Halifax

Looked like Ilkley back quarry to me

I'm sure it's not Ilkley. The quarry in the show looked much bigger than the back quarry. I thought it was something in Lancashire?

Part of Wilton?

Ilkley was just a fleeting guess.

Hmm, tricky one for me this. I don't agree with any of the suggestions so far. The rock looks similar to Cow's Mouth Quarry, although I know it isn't that. Weathered, high up, quarried grit. Possibly near Cow's Mouth or somewhere in Yorkshire. Perhaps its somewhere that climbing isn't allowed. I've been through the guidebooks I own but can't find it, be good if someone can solve the mystery.

Some pics here, and a clue - they say it's less than two miles from where they are in Cragg Vale - 

https://www.mudstuff.co.uk/blog/2019/05/14/gentleman-jack/

Crow's Nest Wood Quarry, then?

That's the obvious candidate* based on the two mile radius from Cragg Vale in the linked article and a search of UKC logbooks. I have no idea whether it's correct because I can't find any images of the crag online and the only guidebook listed on UKC is twenty years old.

*If it is a recorded climbing crag at all.

Crow nest is completely overgrown, and there is no vehicle access. 

Thanks very much, got it now I think. Its "The disused quarry at Nab End, Mytholmroyd":
https://www.geograph.org.uk/photo/994204

Its not in the UKC database by the look it.

It's Nab End.

Beaten by a minute!

That's what I thought too, but now believe its a different Nab End to the one listed on UKC. Follow the link in my last post for details.

Great UKC team effort on this one though

Oh of course. Interesting it's not on here. Might be worth a wander up one afternoon, looks to be quite extensive on Google Maps, many bays with walls (how high is anyone's guess) in all directions.

Thanks, I'll pop up for a look tomorrow.

Its Nab End at Boulderclough above Mytholmroyd. A friend of my wife owns it and I believe she has been paid handsomely  by the TV people.

My ex-wife owned this nearby quarry   Cross Stone Quarry  

If we hadn't split up I could have developed it as Calderdale's premier sport venue...