Not a chance.
Yes, if it was hidden, then I could have paid it. But even then I'd have seen it in the monthly payments, and said WTF is that?
The only one exception I can think of was 1 bank loan I got from HSBC, and they were quite crappy about rules I had to meet. I'll find out if I paid any PPI.
I've had plenty of financial products, but the only way I'll have had PPI is if they've made me have it, and I doubt that's the case. I'm guessing that those that are having successful PPI claims, probably chose to have it in the first place.
I remember the discussions - 'Do you want payment...