Multiple people have taken to social media to share videos and pictures of what seems to be an unidentified aerial phenomenon (UAP), which saw clouds from Ealing to Walthamstow changing colours.
Social media has been quick to speculate about the reasons - with some people blaming aliens.
One Twitter user said: “Saw some UAP earlier in West Ealing. Any idea what this could be? No sound i.e.. like a helicopter etc. but the lights were slowly moving.”
To read more and view the video, click here.