Thank you Scrimnet your help is appreciated. I have seen other posts you have written and your military knowledge is amazing.
I have spoken to the subject of the photograph again. He says when he joined the TA he added 2 years onto his age. He was in the 10th Worcestershire regiment. He was born in Feb 1922. He is sure that this photo was taken in late 1939 or early 1940 when he was around 18, which is what you say.
His travels abroad began on D day and he spent time in France, Belgium, Holland and Germany. Unfortunately he has no photographic record of these later years when he had transferred to the 12th Corps Assault Troops 93rd LAA (hope I have got this right)
Thank you for your expert help
Angela