Where is Britain's most expensive street?

Britain's Property Rich List has been announced, revealing a massive leap in the number of million pound properties in the UK. There are now 323,684 homes worth over a million pounds - up 32% from this time last year. At the very top end, a typical home on the most expensive street in the UK will now set you back more than £36 million.

So why is the million pound market booming, and where are these multi-million-pound neighbourhoods?
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