Password on Credit File

red_debs

Hello Hoping someone can help.  It seems that my address is being used to take out car insurance - A few months back I received insurance documents through the post that were not for a car I owned.  I resolved this with the insurance company and treated it as a one-off but now I have received a speeding notice for another car I do not own and the DVLA assure me that the car is not registered to my address so I can only assume that the address was taken from the Motor Insurance database.

I have run a credit report on myself and there are loads of soft searches from insurance companies that are not relating to me.  Most show a name similar but not the same as mine.  I am now fearful that there are many insurances out there linked to me.
Is there any way I can find out this information?
Is there any way I can stop it happening? 
I understand I can set up a password on my credit file using a notice of correction, do I have to set this up separately with all the credit agencies or just once and it will it be held centrally?
Will doing this stop it happening?

Appreciate anyone's advice 

[Deleted User]

Adding some sort of NOC or marker will mean all your individual applications being manually reviewed so it would be sensible to be careful with this.

A one off insurance application which you resolved along with an incorrect NTK doesn't sound like a lot of problems, just a one off where someone has registered their car and/or license to your address. Soft searches for insurers happen all the time, particularly near your renewal if you use comparison sites, they don't have any impact on your record