KEITH HALL was born in Leeds, Yorkshire. After leaving school at 18 years old, he joined the Royal Navy and spent thirty-three years in the medical branch; the majority of this time was spent on nuclear submarines or in shore billets in support of the Nuclear Propulsion Program. After leaving the Navy in 2003, he worked as a health physicist ... Read moreat HM Naval Base Clyde. He retired in 2015. An avid collector of old photographs and postcards, Keith Hall writes about local and naval history, particularly focusing on submarines. He is currently working on a book about the Navy’s Trident submarines, a follow-on to his work about the history of the Royal Navy’s Polaris programme. Show Less