Except that isn't born out by the figures, UK manufacturing is weakening at the moment. The pound might be delivering higher profits on foreign trade but it isn't delivering more orders yet.

Though I personally (and not being involved in it directly or indirectly) think Brexit is essentially a "stupid" move by the UK, I don't think that it - in itself - should cause any particularly dramatic change, after all the world worked fine even before the European Economic Community and the consequent easyness in import/export within the EU.

Surely there will be some changes in procedures and probably some added bureaucracy but nothing that cannot be taken care of.

From experience, in the '70's and '80's exporting from Italy to the UK involved having a "special" status as "registered exporter" at the Ministry and filling a number of Customs and Bank forms (only for the record and as a curiosity, some of these forms were needed in some 10 copies and at the time the "most powerful" electric typewriter we had available could make at the most 6 or 7 carbon copies, so each form was typed twice).

I have the feling that Brexit is used as a sort of scapegoat or that linking it directly to the bad results of companies (most probably due to a number of different reasons) is a way to attempt influencing the people to be against it.

I had no idea Bank of America closed its Canary Wharf London office and will "never come back" from Ireland.

These banks aren't going anywhere.

they're currently hiring all across the world, including the UK: https://careers.bankofamerica.com/search-jobs.aspx?c=&r=emea

Says they completed it in December with 125 job moves. They don't need to fire everyone in the UK to change where their money moves.