The 1911 Irish Census records the family as residing in house 2, Mount Royal, Portrush, Co. Antrim. David records his occupation as a bank inspector. There are 2 brothers, David (4) and Henry Alfred (2). A nursemaid was also in the house on census day.
Following his war service, Lindsay resigned from the Bank on 22nd November 1946.
In 1949, the London Gazette records that he was granted an extension of service for five years in Class "C" and is granted the rank of Squadron Leader (subs.) with effect from 14th April 1948 (seniority 1st August 1940). He relinquishes the rank of Wing Commander (temp.) 1st November 1947 and is transferred to Class "A" with effect from 11th October 1948.
Lindsay continued on in the RAF until 11th May 1955 when he relinquished his commission and retained the rank of Wing Commander.