For years his identity has been a mystery because he never found out and since he was uncredited, no-one else could find out anything about him. I can reveal that his name was Egbert Sen and he also appeared on Minder and also as a waiter in Octopussy. He sadly passed 3 years ago and his daughter is just sorry he never knew because he'd have loved all the attention. She might now attend some conventions to see if anyone wants to meet her.
The actual source for this uncovering of his identity is a french guy with a passion for cinema, resolving mysteries. his name is nicolas delage and here is the video about his investigation where he tells how he managed to find out about Egbert Sen and interview his daugthers:
he previously uncovered the identity of the woman who voiced the mogwai in gremlins during the singing parts.