Funny, if you search maps.google.co.uk for my postcode in satelite mode you notice that (if you zoom in an look below the arrow) the Brick Lane market is in full action. Obviously the picture is taken on a Sunday because Brick Lane market is only open on Sundays.
It looks really crowded and big from up here. Chapel market which is open almost all days of the week is covered in a big shadow and doesn't look crowded at all.
UPDATE Seems that Google Earth has updated its picture over the Brick Lane market and this time it's on a market Sunday too! This edition is later in the afternoon though judging from the shadows. latest copy