Sister-in-laws added as financial associates

AlCapwn

I checked my credit file via checkmyfile and found an association with my former sister-in-law (now divorced from my brother). We never opened or shared any accounts.

Today I checked my file again, and now my other sister-in-law has been added!

In both instances, it was being reported by Equifax but does not give any specific details to narrow down why.

Any ideas what's happening here? I've raised a dispute via checkmyfile but I'm baffled why these were added in the first place. The dispute only works to remove the association and doesn't obtain details of why they are added in the first place.

My brothers and I have names which are spelt similarly (sigh!) - surely Equifax is not mixing us up?

Nasqueron

More than possible they have wrongly linked it 

Unlikely but possible is the ex doing some fraud and your ID is now tied to it.

File a notice of disassociation with Equifax and report it as dodgy

AlCapwn

The notice of disassociation is progressing - how do I also report it as dodgy? Also, any way to notify Equifax that they are potentially mixing us up?

I plan to buy a house in the next year so don't want any surprises showing up at application time.

Nasqueron

https://help.equifax.co.uk/EquifaxOnlineHelp/s/complaint-page

Escalate to the ICO if they do not take action in an agreed timeline