Black balloon/round shaped going extremely fast over the South East coast of England.First notice in clear evening sky, and thought it was a baloon, but it travelled too fast to be a balloon and it also went across and up and travelled a good distance of sky in about two minutes managed to get my camera out but only managed to get one photo but by thenit was starting to disappear. There were no lights or after tail to indicate fuel. First it looked like a balloon but then rounder travelling much faster than a plane as I can see planes every day as we are in their path. It looked completely black. Whether the phot can be enlarged several times I do not know yet until I get the film developed. There does seem to appear a lighter aura round the object, no sound. From where it disappeared some 3-4 minutes an aircraft passenger was still climbing leaving England.