Written by John Kruse, one of the leading experts on Bailiff Law, this consumer friendly guide is essential reading for anyone who comes into contact with a bailiff.
The book is easy to understand and clearly explains the rights
a bailiff has, and also what they cannot do when collecting debts and repossessing goods etc.
If you've already done your DPA request letter I'd send it to wherever the reply came from. If you're sending the preliminary letter because you know the information, I'd send it to wherever you get your statements from or the Head Office which should be on all correspondence from them.
If anyone else can state any address please do so as I haven't any experience with Sainsbury's.