You posted a BBC article to support yourself on the EU... You bad man...
Yes what he said was correct in it's statement. The UK would loose it's AUTOMATIC right. That does not mean that any other rights to do not exist and it also does not mean that those banks may not choose to stay in the UK and carry on their transactions in a less direct way.
The Moody article also stated a Categoric Truth. That the mechanism to carry out these trades from outside the EU does exist and is being used today.
The OPINION that all these companies would HAVE to leave the UK is just that, and opinion. But it is being stated as FACT. Something I'm beginning to become somewhat irritated about.
In fact, the way the EU has started demanding back taxes on legally submitted tax returns which were accepted by the government concerned, might lead the banks to stay in the UK and trade over the border.
If we carry on as we are, in 5 years the EU will be less than 18% of world GDP and that will continue to fall as a %. If we were to create the world market for Renmimbi in the UK, the trade volume could easily exceed the entire EU trades and the EU would be locked out unless we let them in.
The EU might want to tread _very_ carefully on this one or they could find themselves on the outside of $62tn worth of trades which they are not entitled to trade in unless they move their banking business to the UK.
Nobody is talking about that right now, but, come the time, they will.
It will be nice to see these self important people grovelling for a change.