check out this article from way back. Market rigging COULD become a crime......... https://www.theguardian.com/business/2014/jun/11/currency-market-rigging-criminal-offence
That's specifically about the "city" of London - the "city" is above that level. They write their own rules/laws. The Queen even has to ask permission to enter the "city". The city is just over a square mile large along the Thames river, and they elect their own government. The City of London is guaranteed in Magna Carta which is still in force.
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