I get my credit score regularly,
have checked and theres nothing on there, and no searches other than ones for insurance quotes etc.
I can't think of anything I would owe money on, I've never been a non-payer on anything.
The only thing I can think of is that energy company who kept messing up, but there's no debt there, they even admitted this to me. They just seemed to think they were supplying my property when they werent and couldn't seem to sort it out. I'm with a completely different supplier who I pay by direct debit.
And surely I'd know about something like this? I'd have received letters or had some correspondence from the company before any alleged debt had been (presumably) sold off to this uk search ltd, who seems to have my name and email, and want me to confirm all sorts of senstivie personal information back to them before they'll tell me what it's about.