Is this a UFO over Westminster Abbey?

A tourist claims to have filmed a UFO hovering over Westminster Abbey - the venue for the royal wedding - prompting calls for the Ministry of Defence to investigate. SCROLL DOWN TO SEE THE VIDEO!

The holidaymaker, who came from the Netherlands, posted his video on the internet, writing: 'First we thought it was a parachute but it was way too high up.

'It changed shape but stayed there for at least 30 minutes. Then I lost sight of it.'

The sighting emerged shortly after a retired US Air Force major predicted that extra terrestrials would visit earth to see Prince William and Kate Middleton tie the knot.

British UFO expert Nick Pope, who has worked for the Ministry of Defence, told The Sun newspaper: 'I think it should be investigated if it's feared it could be a threat to the royals.'

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Hoax or for real? Should the Ministry of Defence investigate? We want your views!