Thank you Amy.
I have found out the below info but still don't know whether he is alive. Can you help?
William J Crowe b1945 Poplar was the son of William A Crowe & Alice M Young, who married 1944 (Poplar 1c /387 q December 1944). William A Crowe was likely born 1922 (Pancras 1b/60 June 1922, mothers maiden name.- Jones)