Once the rain cleared, I walked into town and went to Selfridges, it was heaving. I walked home along Bond Street, Piccadilly and Covent Garden, all were busy, possibly the busiest I have seen it for months. Were people shopping, I am not entirely sure, but everywhere I looked (and walked through), was packed.
However, I have no doubt that if I would have gone out earlier, it would have been far quieter.