Consider becoming a named driver
If you need to drive someone else’s car every now and then – say another family member’s car – it might be a good idea to add your name to their policy. This will give you the same level of cover as the main driver.
The main driver on a policy must be the person that drives the car most of the time; as a named driver, you should only be using the car occasionally.
Be aware of 'fronting', though. This usually happens when a more experienced driver insures a car in their name, but a younger driver actually uses the car most often. The aim of this is to reduce the young driver’s premium. Fronting is illegal and could invalidate a car insurance policy.
You should also be aware that if you are added as a named driver, you typically aren’t able to build up a no claims bonus on that policy (you can still build up a no claims bonus if you have your own car and you’re insured as the main driver). Some insurance providers may let you do this, provided you take out your own policy with them in the future, so check with the provider.