Thank you so much for that information. I have received a copy of Alan's birth certificate today and he was indeed born on 2nd June 1923 in Chorley Lancs. I will try to get a copy of his death certificate.
Can you please advise where you found the information on his possible death as I dont have full access to the whole of this website so I order a death certificate.
I have only recently started researching my new husband's family but I am aware that Alan's mother and sister were looking for him in vain until their deaths and it would be so good to be able to let the living members of the family know what had happened to him.