The following is a template letter/email for contacting the DVLA to see who has been requesting and/or accessing your data as the Registered Keeper of a vehicle.
https://www.gov.uk/request-information-from-dvla
This should be emailed to the DVLA at:
[email protected] or Posted to DVLA at the following address:
Release of Information
Paying Enquiries Section
DVLA
Swansea
SA99 1AJ
Despite the impression given by the abo