Richard Griffiths was 27 in Well Thank You, Thursday when he played the character 'Window Cleaner'.
That was over 48 years ago in 1976.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2013 he died aged 65, starring in 57 films in his career, 56 of those after Well Thank You, Thursday was first released. If he were alive today he would be 76.
In Well Thank You, Thursday, I think Richard Griffiths looks: