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That's good to hear Ladybird.
In their case, they took out a mortgage with Northern Rock, who went bust 2 years into their agreement. Because of NR's situtation they were told to go and get a different mortgage somewhere else, so they no longer have that mortgage. However after it was all sorted out they realised they were paying an amount to an insurance company and didn't know what it was for. Upon much digging, they got told it was for a loan they had with NR, so it seems they signed up for it without knowing. They now want to try and claim it back, especially as that loan doesn't exist any more but in my mind it would be hard to prove they didn't even know they had the insurance so they should look into other options, one being that he was self employed at the time. Although I have since discovered that although the mortgage was in both names, the PPI was only in his name, which appears to be classed as mis-sold too.
It's all rather confusing.