At the old wembley we would always park on outskirts of London and tube it in. So much easier and cheaper and of course tube straight to ground which is quite an amazing site as the tube doors open. For us this was always Hillingdon but looking at tube map south would be something like Wimbledon.
Have to laugh as it reminded me of a bar in Japan when I was there for the world cup. The bar owner an English guy imported when he could heinz baked beans. With the normal food he sold he sold the beans at £5 a tin and never failed to sell all the tins he had.