Researching Derek Meddings Submarine Model

Hi all,

I wondered if anyone here might be able to assist with a submarine we've been trying to ID for a while now - made by Derek Meddings and reported to have been from a Gerry Anderson production, I don't suppose it rings any bells with anyone? Any thoughts would be gratefully received, if you could email them to sian@propstore.com that would be fantastic.
Thank you for reading!

Siân

Its an O class sub post was

I don`t remember seeing that sub in a Gerry/Sylvia Anderson production