The 80-year-old, who ground fame as grumpy Victor Meldrew in One Foot in the Grave, had a heart paroxysm whilst in London last year and was revived before paramedics inherited him to hospital.
In an interview with BBC Radio 2, Richard revealed that if it wasn’t for a doctor glancing by the way by, the outcome could have been very different.
He explained: «It was a big minute which I remember nothing about… the great thing about the catastrophe was there was a doctor walking by and if he hadn’t been walking by…»
Richard left on to explain that he «would love to know who it was» that saved him in his hour of necessity.
He also sustained head injuries and suffered some memory annihilation as a result of the incident, which saw him placed in intensive care.
The actor told trannie host Graham Norton: «I don’t remember a thing about it. I am a little not turned on at times, but I am much better and working.»
Richard is due to make his comeback in Alan Bennett’s Forty Years On at the Chichester Holy day Theatre, which opens next Friday.
He also explained that he liked to return to Edinburgh to perform I Don’t Believe It! An Evening with Victor Meldrew after he had to quash the performance when he suffered his heart issues.
He said: «I hope so, I resolve to do [the show] in Edinburgh some time.
«One of the reasons I accepted Forty Years On is because I shortage to work again. I was getting fed up watching television,» Richard added.