Nobody you'd consider MASSIVE I guess but :
-David Batty used to live a couple of houses down from me when I was a kid*
*-Spencer Wilding (Darth Vader in the new Rogue One, as well as actor from lots of other things) I know pretty well, although I'm fairly sure he doesn't ever remember my name given that he refers to me as "Wolf Lady" when he sees me lol*
-Phill Martin (Minor actor in Prometheus, Pan, and other films) I'm friends with
-Martin Ballantyne (He played one of Heath Ledger's henchmen in Dark Knight, as well as being a minor actor in lots of other things) I'm friends with
-Pam Rose (minor actor from Star wars and other things) I'm friends with
-Michael Henbury (Gringots Goblin from Harry Potter, minor actor in Willow, and lots of other things) I'm friends with. (He's also Britain's shortest man)
*
-I've met Chris Barrie (Red Dwarf) a couple of times
-I've met Andrew Lee Potts (Primeval) a couple of times
and so it goes on and on... ack there are lots of other minor actors that I either know well or I've at least met and spoken to. I'll just list them, you can look them up if you want.
Dave Prowse
Hetty Hayrdige*
Michael Stuart*
Josephine Gillan*
Christopher Rithin
Paul Redfern*
Ross Mullen
Brian Wheeler
Virginia Hey
Josef Altin
Jon Campling
I've SEEN quite a lot of others like Colin Baker, Sylvester McCoy, Sarah Louise Madison, John Chalis, Nathalie Cox and so on and so forth but I've never spoken to them. Not yet anyway.
*
Part and parcel of my life to be honest. No doubt I'll meet many more over the years. They're just people.