Anyone has heard of those? My husband received a letter today from them, though the name of the person it is addressed to is slightly misspelled. The first name is correct, the second one not. Apparently they are claiming he owes over £500 to HPH2 LTD. (ex Welcome Finance Limited). 
Neither of us has ever had any loans. We have credit cards, however my husband hasn't got any balance on any of his now. We are trying to buy at the moment so we don't need this stress.
His credit score was in the highest one a few months ago. Thanks for any help / advice.