A published expert on Bradford architecture and national listed buildings has died aged 84.

John Ayers died at home after a brief illness surrounded by his family and wife Jane.

Born in Bradford and educated at Marshfields Infants and Junior Schools, then Belle Vue Grammar School, he graduated from Liverpool University with a first class degree in civil engineering. His first job as an engineering assistant was with the Yorkshire Ouse River Board, before being attached to the Royal Engineers’ survey squadron for his National Service. He went on to join his father’s architectural practice in Bradford, becoming an associate of the Royal Institute of British Architects and a chartered civil engineer.

In 1976, with his wife Jane, be brought out a new book of photographs Bradford Old and New which the Telegraph & Argus serialised. His favourite Bradford buildings were City Hall and the Wool Exchange, judging buildings on their quality and the position they were in.

His wife said: “He knew what he liked and what he didn't like. He enjoyed being an expert witness, using his brilliant intelligence at public inquiries was satisfying. He was brave enough to stand up and say what he had to say”