Put in writing, catagorically deny living at other address since 1998, explain how the property was repossessed and confirm how he has been paying council tax at current property for last 7 years (supply copies of any previous council tax bills & repossession paperwork in his possession) then sit back.(posted 7330 days ago)If they take him to court provide defence including a copy of the letter (and enclosures) he is planning to send to them, scrutinise and dispute any paragraphs of the particulars of claim which are factually incorrect and place a claim for loss of earnings, travel and copy fees incurred (if any).
The burden of proof will be on the council to prove he has lived at the other address. Which unless they have proof isnt going to happen.