It's amazing how different a place can look all in the space of one day.  Waking up into a famous pea-souper of mist and fog, I can barely see across the common.  But by the time I reach Hyde Park the sun has burned the mist off and it's a beautiful sunny day.  Once the sun goes the mist creeps back in, especially along the waterways of East London, and it all has a bit of a spooky Jack The Ripper feel...