you flew missions over the Berlin on the IL2 Berlin map, lets say 2002-2003 ?
i can remember building missions for the VOW onlinewar, the city was a "no go" for us missionbuilders in the campaigns
it took some years, nowaday its almost no proplem anymore.
i expect the same development for London in CoD , it will took some years till we can fly missions without proplems over the city
but true, we will see soon.