A post at UKMoneyPot states that the 14 day cooling off period you receive when buying many types of financial product, such as loans, insurance and credit cards, also applies when your policies “auto-renew”.
For example, as with many insurers, if your car insurance renews automatically each year, you still have 14 days from the start of the new policy to find a better quote. So you can treat the new policy as a reminder to check you’re still getting a good deal.
Useful to know, thanks UKMoneyPot!