Thanks
Many thanks fauteuil volant, I will, if I may, give you due thanks and credit when I publish the film on Site. Sorry PAXboy, I cannot help with regard to the Viscount, the old B&W film definitions are not that great but you may wish to know that "baddies cargo" was loaded onto a Douglas Dakota G-AMPZ which seems to have had a long and varied history.
Thanks chaps for your help.