RIP Victor Pemberton

Occasional bit player in the show, dramatist, script-editor on Tome of the Cybermen (wrote the famous "noone can do what we're doing" scene), Writer of Fury From The Deep, The Pescatons, and creator of the Sonic Screwdriver.

Raised money for Help for Heroes last year by travelling alone by car across Europe and Scandinavia to reach the Arctic circle

http://www.doctorwhonews.net/2017/08/victor-pemberton-1931-2017.html

Didn't he also part-write Timeslip too?

That was a fantastic series, anyone who craves 60's era Troughtonesque Doctor Who, I would strongly recommend it to.