So near the savoy is a semi circle road https://www.google.com/maps/search/bush+house/@51.5128306,-0... which feels like a round about and and you are forced to enter it from the wrong way.

In fact driving in central london is a unique skill that I unwittingly mastered as I learnt to drive in zone one.

This means that I can out manoeuvrer a pissed off white van man in a hurry. Its like chess but more angry and slightly slower.