Although I am in the US, I am certainly capable of handling all of your needs as I have a great deal of experience working with clients out of state and out of the country,

I have designed an interactive research site that is folder based that enables me to post visual archives from a wide variety of sources in subject folders enabling my clients to view an assortment of visual options. When my client selects assets for inclusion in their rough cut, they simply have to add to a light table (even from multiple subject folders) and then download the light table as a zip file. When the file is unzipped, the assets are revealed in the subject folders they originally came from! When it's time to order high resolution assets, my clients place one order, and I obtain the high resolution assets from the variety of sources, and place them all onto a private ftp site for my clients to download the master elements.

I obtain all of the proper rights and clearances and work within client budgets and simplify my clients' lives!