Thank you for your reply?s I?ve actually watched the driver unload and there are plastic blinds behind the door he pushes these aside takes the boxes out and puts them on a trolley. He could then close the door keeping it cold, my wife spends more time with the freezer door open than he does there?s absolutely no reason to leave the engine running The funny thing is I live 300 yards within the road closures in Dulwich Village and often have to make a 45 minute journey to get home then the 30 seconds it would take me to get home