3 films have been located for which Stan provided the voiceovers

Someone Special (WReNs recruitment)
Men For Tomorrow (Army recruitment)
Sugar As Energy (Schools educational)

All have been added to the relevant page in the films section

Also it has come to light that some of Stan's dialogue from the Scotland Yard series was sampled in 1989 by an act called Hoodlum Priest on a song called "Crime Inc." See the samples side by side in the link
https://www.whosampled.com/sample/686655/Hoodlum-Priest-Crime-Inc.-Scotland-Yard-Which-Gang-Was-He-Mixed-Up-In%3F/