hilhouse,
I cannot assist re photos. I believe Mr. Lakin had 2 sons. One, the younger, Ken, joined the Police, and then resigned to take over the running of the shop in Wetherby. He later moved to Hebden, near Grassington(now North Yorks.) where he ran a pub with his wife. I believe that he has now retired.
I am sure the older brother was also in the Police, possibly at Pontefract. He studied law and I think gained an LLb., subsequently leaving the Police. I believe he moved to London and became a barrister. I think I have that right re the older brother, although my memory is a bit hazy re him.
'Hazy memory' ? - it has just flashed into my mind that his wife's name was Christine.