How do I avoid the ULEZ charge when selling a car?

I'm selling my car due to the ULEZ charge. When the buyer drives away a charge will be raised; how do I avoid liability?

Can I sell a car without a V5C?

I've taken my private plate off my car online and got the retention certificate within a week. The DVLA said the V5C will arrive in 4 to 8 weeks. That was 3 months ago. I want to sell the car, which is...

I want to sell my car but have lost the V5C - how do I get a new one?

I am looking to sell my car but cannot find the V5C logbook. What is the procedure for getting a new one and will this delay the sale?