But by 2.30 everyone was drifting away and I had decided to take advantage of the sunny day to walk in the City, a part of London I do not usually go to.
Terry Pratchett's Ankh-Morpork is said to be built on 'black loam, broadly, mostly what it is built on is more Ankh-Morpork'.
The same could be said for London. The bombing of London revealed parts of the Roman fort for the first time in a very long time.
Parts of the London wall have been preserved and new buildings rise up around the remnants.
From here it is a short walk to the river and St Paul's.
I had not been to the Tate Modern before, so the camera was in constant use, on the way and inside
and coming put into the evening light.
And then I walked back to Kings Cross, amazing much more footsore I get walking in London than elsewhere.
More images, as usual, on Flickr.