Blocking of the bank accounts
Not all banks block accounts once a death has been reported. In case of doubt, heirs without power of attorney can verify their identity with an official document, such as ID showing their registered marital status.
By doing so, they can instruct the bank to block all the testator’s accounts, or at least to find out who has power of attorney over the accounts, or whether the accounts will or have been blocked.
Incoming payments are still possible, but outgoing payments, such as standing orders and direct debit orders, are stopped under some circumstances. You should therefore enquire with your bank how it will handle payment transactions for the accounts concerned.