An angry homeowner left a handwritten note on a paramedic's car during an emergency medical callout after becoming annoyed that their driveway was blocked.

The message, which was placed on the window of the vehicle in Harrow, read: "Next time do not park in front of someone else's driveway when you have plenty of space in front of the house you came to attend"

The London Ambulance Service replied by Tweeting: “Sometimes we have to block your drive. We're sorry, but it's an emergency."

The tweet also added that the car medic had left the other space for an arriving ambulance.