What proof do you need to get a car key made?
Anyone who will make a car key without asking questions is not somebody you want holding your details. Here is what a proper check looks like.
Photo ID
A driving licence or passport. The name should match the ownership documents, or you should be able to explain the link.
Something that ties you to the car
The V5C logbook is the usual one. An insurance certificate, a finance or lease agreement, or a recent bill of sale also work. For a company vehicle, a letter or email from the company along with your own ID.
If the documents are locked in the car
That is normal with lockouts. The locksmith opens the car and you show the papers then. They will still need to see them before they leave.
If you have just bought the car
The green new keeper slip from the V5C and the receipt from the seller are fine while the new logbook is in the post.
If the car belongs to somebody else
A partner, parent or employer needs to confirm you are allowed to have a key made. The simplest way is for them to be there, or to be on the phone with their own ID to hand.
Why there are no exceptions
The check is the only thing that stops a thief ringing up and having a key made for your car. If a locksmith is strict with you, they are being strict with everyone else too.
Want a price for your vehicle?
Make, model and year is all we need to start.