Men Of Tomorrow

I dont know if you can help but I am trying to find out any information regarding the British film Men Of Tomorrow. This is not the film already listed on your web site but a later one made in either 1958/9 (depending on the listing) and featuring a young David Hemmings.
Any information you can give me would be really gratefully received as both my friend and his father were extras on it and neither of them was even certain that it had been released until I started looking.
I will look forward to hearing from you

Regards
Bobbie Hindman