Yes, I believe it is too late.
According to the Martin Lewis website: "If your account was still ACTIVE in the last six years you can claim. So a loan taken out eleven years ago, repaid in full five years ago is fine. In rare cases you can go back further."
See more info in the full guide here:
http://www.moneysavin...im/ppi-loan-insurance
On what basis would you be reclaiming. Your claim has to meet certain criteria