When we formally leave the EU, the latter banner will be replaced with the Flag of the Commonwealth of Nations. I thought it might therefore be appropriate to delve a little deeper into this Commonwealth.
If Brexit happens with little provision for London's financial services, banks, funds and insurers in London will lose their ability to sell many of their services to European companies.
In the event of a 'hard Brexit' scenario, financial services companies would lose the prerogative of operating under one rulebook, and potentially have to comply with 28 countries, Mahmud warns.
Donoghue said that these included more than one American bank, with firms sizing up offices ranging from 10 to 1,000 staff.
One year on from the EU referendum, it is difficult to tell whether this number is shaping up to be correct: too many firms have not made public announcements, numbers have been vague and, with the terms of Brexit unclear, there are too many hypotheticals