Anyway, I got my answer today, post dated late ... my first response from my current MP after five tries ...
Verbatim ~
12 August 2011
Dear MR xxxxx
Thank you for your recent email regarding the security of census data.
I have immediately written the Cabinet Office on your behalf and, as soon as I receive a reply, I will contact you again.
Thank you for taking time to bring this matter to my attention.
Yours sincerely
DEBBIE ABRAHAMS MP
Oldham East & Saddelworth.
Three fucking months too late, I get the above half arsed excuse and that's it.
Let's see if anything comes of her investigations ... ?