The main guest characters who appeared in Doctor Who stories without actually meeting the Doctor were often interesting.  Including Bates and Stratton.

I always loved Bates and Stratton. They were such good side characters, we didn't spend long with them, but we got a good sense of who they were. Great back and forth between them.

Nothing says Tea Time TV like Cyber Decapitation

If the Doctor thought there will be no more Cybermen after his 1st encounter with them, he was wrong They keep coming back ro cause trouble.

I'm jealous. I want that head so badly it would look awesome in my shelf. lol 1:53