Paul Cummins wrote

In theory, ANY card should work in ANY cash machine in the UK - there
is
theoretical 100% inter-operability.

If the issuing bank wants, anyway.

BBC Moneybox recently noted that one bank's /basic/ account now allows
only the use of 'own' cash machines.

If /basic/ customers take out small amounts often the fees payable to
other banks might make such accounts unprofitable.

--
Mike D