This in from a London production company:
Good news – I have managed to make contact with relatives of the photographer ‘Smedley’, so this case can be closed now. Thank you for your help.
I wondered though if you might be able to make another post for us, relating to another photographer which we are trying to contact?
We are trying to track down a photographer, the details of which are as follows:
Geoffrey Douglas Bolton
Geoffrey Douglas Bolton published a variety of photographic travel books during the 1950s.
We would like to make contact with any relative or representative of Geoffrey Douglas Bolton regarding use of one of his stills.
Details and info to email@example.com