Duncan was a headteacher at Kite Hill School (a preparatory school) where his mother Alice was living with him when she died in 1953. Rodney and Roger North, the grandchildren of George Eliphinstone North, (who was the uncle of Duncan) attended Kite School when Duncan was head master.
A former pupil Martin Borland writes: “Kite Hill was a private preparatory school - Mr North was the headmaster, and I think also the owner. I found my school reports this morning, with his signature on them!
It was housed in a large corner-site house (probably formerly a residential building), with a very sloping playing field, and I believe it closed around 1963, as Mr North became a teacher at Riddlesdown County Secondary School – also Purley – which I had moved to after Kite Hill. My recollections are 50 years old! “