Years ago I worked for a large broker. The premium differences between different insurers could be incredible. It always pays to shop around, and although cheap can mean lower cover, it often doesn't. I recall switching people to much cheaper policies and much better cover. You should do it every year, there is no loyalty with insurers, and all you need to do is execise a bit of care about the cover, ncd protections, etc. One small warning, if you know something is going to change, like you might add a driver, or need open drive check before you switch. An insurer good for one thinglike self -only drive, can be expensive for add'l drivers, and cancelling a policy to switch back can be very expensive.