Here is an address for a department which seems to like to hide itself away from the public. They should really know their stuff as they are responsible for ensuring compliance by the branches. Send your S.A.R - (Subject access request) to them. They of all people should understand what is needed and should make sure that it happens.
If you don't get your information - then call them and complain. Insist that they handle it when they try to fob you off somewhere else
Lloyds TSB Bank PLC
Tel: 01634 834 207
Also try: 01634 829 222