I hope to get advice on the visa extension.
My visa is going to end in beginning of April and has made an appointment to renew the card.

One of the requirements is that I need to bring certified bank statements to prove my financial status. The issue is I maintain my bank account in UK and the bank is unable to send the certified copies. They can only send the originals without any stamp or signature to say these are the real copies.

Do the Spanish authority accepts the original statements without any stamping or signature ?

Please advise. Thanks very much.