How unnecessarily uncaring and flippant! How could thea y possibly imagine that some banks would stop them using their exisiting cards.
Oopsadaisy- same for you. the point is, that people made the decision to go and live in the EU, secure in the knowledge their pensions and the access to them via their long held UK bank accounts, would be secure.
Callistemon 'There are umpteen choices for alternative cards.
I can't see what the problem is.' - then you are not looking very hard. People who live in the EU have UK pensions, based on a lifetime of contributions in the UK - paid into their UK bank accounts and later transferred. If you live abroad, you cannot have a choice of credit cards - really, it is not hard to understand.