Hi Winso,
Sorry to hear about the alloys being damaged

there are companies that can refurbish the wheels, but it may be worth waiting until after winter to put these back onto the vehicle.
Your Insurer's record should reflect the exact current detail in relation to your personal circumstances (inc. driving history, occupation, use required, garaging arrangements) as well as the vehicle itself.
Whilst it is a hassle, this is material information and you should let your Insurer know.
Simply give them a quick call so they can note their records, but within the call explain that the wheels are likely to be back on when the weather improves.
Kind regards
Tony
My car's insured with alloys declared. If I take them off and put the standard ones on will the insurance still be valid? Reason is that wide 17s are total sh*te in the now and I've now kerbed them twice in the last week. Don't want to do it again!