Used to be good but no longer
I have used quidco for years relatively successfully but am now finding biggish cashback sums not getting tracked - eg house insurance. Because the initial purchase and the quidco pay can be months apart it is not easy to keep an eye on them in any detail whatsoever. I used to trust quidco to get most of them right but no longer.
A year ago I picked post office insurance because with the quidco compare insurance service the cashback (28) made it the cheapest. The purchase was logged by Quidco but never paid - just spotted. Because it is their own insurance compare tool you can't claim. I now think QUIDCO is not worth the fee and will be cancelling my membership