My ten penn'orth, in the hope that it (at least) will offer a crumb of comfort. My partner received a similar letter from these pond slimes - similar story, reposession then a decade of silence, then out of the blue ARUK start sending polite but insistent letters, encouraging dialogue. After a brief exchange of probing correspondence, we took CAG's advice and requested a SAR. Lo! there was no activity of any sort on the account until Northern Rock unloaded their slew of toxic debt, presumably in order to cleanse the business before fitting Taxpayer-funded training wheels. That was the last we ever heard from these parasites, and that was many many months ago.
As I understand it, the Council of Mortgage Lenders policy is not asking for repayment of debts over 6 YO where no contact has been made with the debtor, despite the statute of 12Y for mortgage debt. This policy transfers with the debt wherever it goes, [my understanding again] since an organisation which promotes or implements a Code of Conduct is bound by the requirements of said Code as if the requirements of the Code were in law. The Code then continues to apply to its successors.
NR being a member of CML is bound by the Code, and by inheritance, ARUK are too. They were greedy enough to buy the toxic debts, but it comes with baggage.
I even contacted the CML to ask why one of their members was in flagrant breach of the Code, but (predictably) they just closed rank and refused to discuss.
ARUK are not the Law, but they and their ilk are experienced at using good laws for a Bad Purpose and to them, the legal system is just another tool of the trade. Their solicitors share the same building, probably the same floor, and in my mental image, the same cobwebby offices overlooking the glue factory.
Behind every reposession there is a redundancy, death, divorce, breakdown or other personal crisis of unimaginable proportions, and people deserve to be treated with respect and dignity.
I hope the advice you've received here, from minds far more qualified than mine, will give you the knowledge and courage to face this situation. Don't give in, don't let the Bad Guys win.
it gets better - believe me
The Arctic Wandere