The man he is talking to, Clive Bull, is still in the same gig on LBC. He often pops up on documentaries about Cook. I'm glad you enjoyed it, I wasn't sure how it would travel. He was always a bit jealous of his comedy partner Dudley Moore, who had more Hollywood success and was the better actor, but Cook was the true genius. Check out the sketch 'one leg too few', which features a one-legged man auditioning for the role of Tarzan.
In a way, it's a bit sad listening to that. I can almost see him, drunk as a skunk, in the early hours of the morning, throwing away this material on a few thousand night workers who happened to be listening at that time.