modified insurance?

[procta]

Has anyone ever modified there car and claimed but not told the insurance the car was modified if so what happened? Did they pay out or did they void the insurance?

I do remember a story years ago, that one of the lads had built a Gti vvc, but didn't tell the insurance that he had dropped the vvc lump in it.
not sure why he didn't tell the insurance, but anyway, he happened to get pulled over by the old bill, Now I don't know why the pulled him, as it was a standard cop car not a traffic one I don't think. Anyway, one of the coppers said, can I have a look around the car, as it was tidy. He said can I pop the bonnet, He said yeah ok.
The engine that was in was a vvc mems 3 which doesn't have the vvc on the inlet, so it looks more standard.
But that didn't really help the lad, as the copper who looked under the bonnet happened to be well clued up on rovers, and picked up on the vvc engine,
He asked straight away is that declared to the insurance?
The owner said no not yet, and with in the hour they took the car off him and impounded it. He had to tell the insurance, about the vvc engine and show them proof of mot and the new insurance. I think he may have got a fine or a warning, I cannot remember.
So if anyone is driving around in a modified car, and told the insurance. Only takes a copper to be clued up on a car and that's it!