Hi Tangofan - I have used my blue A & L card to withdraw cash at the Santander ATM in PP and have not incurred any charges for doing so. The reason, I have been told is because this account is now Santander even though you are still using your old A & L card, which will eventually be replaced by a Santander one. However, I did upgrade my old premier account to a Santander Zero account so not sure if you can use it fees free with the old account.
If you meet the criteria for an upgrade to the Zero account this can all be done with a phone call, all your account details remain the same, just the name of the account changes and you get the extra benefit of 12 months, 5% interest on all credit balances up to £2,500.
Like you I used to have a Nationwide flex account which I only used when travelling, I have now closed this account and the Santander Zero works fine for me.

Don't forget to call Santander before you go on holiday to authorize your card for use when on holiday or you may find access is denied when using in foreign ATM's.
I feel sure that at sometime in the future the facility to transfer money from Santander UK to Santander Spain will happen, so a case of 'Watch this space'.
PS: Another benefit of using the Santander card in ATM's (like the old Nationwide account) is you get the interbank exchange rate, which is usually several cents more than is being offered anywhere else.
Hope this helps
