MrBadger
Badger out
This may assist some but note it is for tyres (not rims - see quote) and "only applies to cars used for personal use that are insured under a private or personal use car insurance policy." So may be different rules for business car insurance.
https://www.abi.org.uk/globalassets...-driving---the-motor-insurance-commitment.pdf
https://www.abi.org.uk/globalassets...-driving---the-motor-insurance-commitment.pdf
As can be seen, often motor insurers will not charge an additional premium when their insured customers use winter tyres, provided that they meet, and are fitted in accordance with, the vehicle manufacturers’ specifications and are in a roadworthy condition.