Appologies for the delayed response Peter.
You’ve explained it well and although I’m by no means a WP coding expert I get the logic of this. One thing I didnt want to do was create imdividual product posts for each of the products, otherwise I may as well just create a new page for each product. I was more after uploading all the individual products and corresponding pdf brochures to a directory and then on each brands product gallery page (there would be 4 brands, so 4 separate pages displaying about 20 product images on each brand page) when you click on the actual product image variables for the products pdf, title and large image are passed to a simple template page that populates based on the product selected, matching it to the filenames of the pdfs/images already uploaded.