But here I am today recording this and I'm in the studio with all the others on a clean mic. It's extraordinary, the actor's found a way of doing it for himself.

I was lucky enough myself to have been in Dad's Army for an episode.

It was just at the end of the golden era of BBC comedy, which was fantastic.

But here I am today recording this and I'm in the studio with all the others on a clean mic. It's extraordinary, the actor's found a way of doing it for himself.

No, I'm at full height, I'm in the studio, I can actually catch actors by the eye, it's fantastic.

Martin Jarvis was to have played the part originally but I think I had longer hair or something, I know not.

It couldn't sound like a dog, because K9 isn't a dog, but I made it sound as mechanical as possible.