David was a teacher for a long time. A very successful one. But then his career started to dart around a bit. He's written books. Some about education, some about life in North Wales -under his pseudonym Ambrose Conway- and he's also become immersed in space travel. David has adapted his working life to meet new circumstances on so many occasions. Check him out, so resilient.
https://www.amazon.co.uk/Books-Ambrose-Conway/s?rh=n%3A266239%2Cp_27%3AAmbrose+Conway