According to the book "When the Snow Melts", the autobiography of producer Albert R. 'Cubby' Broccoli, this picture was one of three from Warwick Films which were "released within a year". The three movies were: 'The Man Inside' (1958), 'Killers of Kilimanjaro' (1959), and 'Tank Force!' aka 'No Time To Die' (1958).
Without any warning at all, the door closed on me. I shouted and finally...
Milo March: You say you've known him for a long time?
Robert Stone: Yes, he's been doing our books for fifteen years at least. The quietest, nicest fellow you could meet. He came here about once in two...
When Sam Carter takes delivery of his forged Spanish passport he runs through the attributes it lists - eye colour blue, hair colour fair, height 5 feet 11 and a half inches and so on. However, Spain adopted the metric system in 1849, so his height would have been given in metres/centimetres.
UK cinema version was cut for an 'A' rating.