Total cloud cover was forecast. Outlook seemed better in SE England so at midnight I started driving SE in search of a clearer sky. Found them at Cobham Services 79 miles later. Sky deteriorated quickly, intermittent views, I was taking a sequence of images but clouds intervened about 30 sec before flash. This is at 5.08, 2 sec exposure with 6D using ETX125, the star on the right that has just been revealed by the moon is 7th magnitude HD 67150.