UK UFO : Thames Saucer UFO Enhanced and Analyzed

Down below video was shot close to the Thames river not too far from Kent. Eyewitness States: "This was taken a few days ago on my mobile phone, and lasted around 5 minutes, my phones memory lasted just over a minute, any remaining "would be" footage would have shown it hover out of sight in the direction towards the river thames towards kent. 
The UFO was hovering over an housing estate. Me and