I have contents insurance with them, and I moved house late August. Remembered at the beginning of October to change address with them. They replied a few weeks later asking some questions, which I replied with the answers.
I have heard nothing since. It is now December, and I have just asked for an update for the second time, and my address is still not changed.
I will have to cancel if they don't sort it out this time. I presume that although I am paying the premium each month, that I am actually not covered since they have the wrong address.