Great insurer, never any cashback
I've used Carole Nash to insure my bikes for years. When I had a write-off I was extremely happy with their response and prompt settlement for a decent amount. Plus the inclusion of European recovery is very useful.
Cashback, however has never been received. It seems to track for months and is then declined with no explanation, even raising it with Quidco produces no result.
Fortunately I only ever consider cashback as a possible bonus, never a certainty.