Wizkid for sure, alot is right time, right place, who you know, connections, word of mouth. Im not sure really most large commercial jobs go through the proper channels. You can of course introduce yourself through procurement or new suppliers, but the guy at the top already knows who he is going to use, I come across it day in and day out. Spun the fluff, send in details - we will keep you on file, its already sewn up. If you want to build commercial your better looking at independent places that can make a decision on their own. They may not be massive buildings, but for a starter it would be a good way to go. Wizkid you just used a prime example there too "I have it from a source" that kinda speaks for itself really.