Nope – although some insurers may try to apply this rule it would be difficult to uphold as how can you (as a private individual) make sure the car is already insured?
If stopped by the police (or in an accident) they will check that the car's owner has valid insurance, they have given consent for the third party to drive and that the driver has a valid insurance policy. Oh and for DOC for most companies you need to be over 25 and not in a motor industry job role. So no manufacturers, sales staff…….
helps to work for an insurance company 😉
The car for sale is actually in my father's name, if that makes a difference.
The car can be added to a policy even in your fathers name. You don't have as much "insurable interest" but you still have some. So you'll be paying less than if you insured a strangers car (which you can do)