Yes, but it is doubtful that you can complain about it.(posted 8080 days ago)The person whose details have been sent ot uou could make a complaint to Eversheds, the bank, the financial ombudsman, and they could make an assessment request to the Information Commissioner.
But, I don't think that the FO or the IC would censure Eversheds or the bank concerned too much. They would consider it to be a minor issue, I feel. But, if there were a number of such disclosures about various customers, then they would take it more seriously.
Good Luck.