Mortgage mis-sold to retired pensioner

AnotherJoe

The main issue with paying off your dads mortgage is that the money becomes his and so if the house is to be sold to pay for care by the council you lose control of that. Better you keep that money and use it as you see fit,
If you do want to pay it off to save the interest, then make it a loan to your dad (you could draw up a simple agreement with him) so that when the house is sold you get your money back.

See this thread https://forums.moneysavingexpert.com/discussion/comment/74223085#Comment_74223085