Data Collection - Stock Exchanges

I am looking for a complete list of companies that are traded on both the FTSE and the NYSE/NASDAQ. Take for instance General Electric. It is traded on the FTSE AND traded on the NYSE. This will not be an easy job as it will take some time to research all the companies. List needs to be complete and I will send the winner a excel spreadsheet with the format I would like. Again...it's more important to get all the companies than it is to rush the job. I already have a few picked out (as a way of checking to see if you have them all), so if they are not on your list, I will not release the escrow until they are. Please only bid if you understand the job and are willing to do it thoroughly.