Locating published research
If you want to identify if any commercial publisher has produced a market study on a particular topic try:
marketresearch.com | researchandmarkets.com
Other libraries
We cannot buy market studies due to the high cost, and they are not usually available for borrowing from other libraries.
If you are in London the British Library Business and IP Centre has electronic access to a number of market research databases. Check visitor access requirements and print/download limits before visiting.