The real value in London - actually more accurately the City of London - is in the networks built up over the decades. By networks I mean the old boys networks

The real value in London - actually more accurately the City of London - is in the networks built up over the decades. By networks I mean the old boys networks where insiders share information with each other over the phone. Software as in used in trading or other financial services is only of value if there are takers for those services. One rapidly eroding service is insurance. The so-called "shadow fleets" are called that only by London, because they're not insured by London. That doesn't mean that they're not insured: various governments have already created vehicles to insure strategically important shipping.