Here is the witnesses description of the what transpired:
Full source: YouTube:
19.03.2011 – While visiting London with our family, my daughter spotted a small white ‘thing’ across London sky. We are standing with our back to Tower of ‘Big Ben’. First we thought it was a parachute, but it was way to high up in the sky. As i zoomed in it looked like a cloud that changed shape. It stayed there for at least about 30 minutes. As the rest of the family wanted to proceed with the tour, i was not able to check how long it stayed there during the day. I lost sight of it.
If you look closely you will also initally see a small white spot next to it in the first frames(top-left). What did I see? Is it just a cloud? Why did it stay so long in one place. Is there a sientific explanation? – Sony DV digital Handycam, 120x digital zoom: DCR-TRV24E -
My initial thought about what it could possibly be, was a skydiver. The white object is clearly not a cloud and its shape resembles a parachute just a bit. Then the object started moving and rotating and it looked familiar. Not the object itself, but the behavior. My guess is that this could just be a bunch of balloons tied together.
Parachute? Clouds? Balloons? or UFO? What do you guys think?