Shakespearean actors in "I Am the Walrus"

Cafe Society
1

As Beatles fans know, a BBC broadcast of Shakespeare’s King Lear was mixed into the finale of the song “I Am the Walrus”, including the infamous lines “O, untimely death!” and “Bury my body”, which fed to the Paul-is-dead rumors.

But here’s a trivial question beyond (and I don’t know the answer): Who were the actors playing Oswald, Edgar, and Gloucester in that excerpt?

2

According to The Beatles Recording Sessions (Mark Lewisohn, 1988) the actors in question were John Bryning (Oswald) Philip Guard (Edgar) and Mark Dignam (Gloucester).

3

Thank you!