Thank you for all the responses, advice and informative education.
After some deliberation, we've decided on a card reader as being the best option rather than route around more in hope than expectation in finding the correct spec cable.. As I said, we inherited the camera and it seemed ridiculous to just bin it when this was perfect for our needs, when all that was seemingly required was one little cable.....however, it's been a very useful lesson as to any future tech purchases ....and from which manufacturers !