[Neil Jones]

Though that article says Keith was credited under a pseudonym, but he's credited as himself in the posted video.

Yeah I noticed that, but I'm wondering if elsewhere in the series he did use the pseudonym and it was changed elsewhere in the run for the credits, as that's a show that didn't seemingly didn't have time for credits. Probably never know unless some other episodes are posted, as Mr Chegwin is no longer around to ask.