I received a promotional mailer today, addressed to me personally as the keeper of a car with my registration plate. At first I was amused at the marketing, but on reflection I have concerns about how my name and address were linked to my car for marketing purposes. I live near Derby and I have parked perhaps a couple of times in the Westfield Shopping Centre (I normally avoid it as it is quite expensive). I have never used the car valeting company that is in the car park. I drive a Vauxhall Astra (although it is black, not silver as the mailshot states). I am guessing that either the staff of the valeting company take down number plates, or that use is made of security camera footage. Either way, I think, the marketing company must have some access to DVLC or similar data. Is this legal under data protection laws?