Supply supermarket, cafe or takeaway sales data for a research project

I am working on a post-grad project and am looking for someone who owns a supermarket, cafe, takeaway business or similar. Basically I want to look at sales data for a 2-3 year period and see if I can determine the amount of packaging waste being generated. I then want to try and forecast the packaging waste that will be generated in the future by using the sales data as a baseline. Data will be treated with strict privacy and will not be published publicly or shared commercially.