The video, captured by a passer-by in the area of the corporation's Yalding House in Great Portland Street, purportedly shows the paranormal sight of the mother ship and its fleet moving around in the clouds above the building.

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As the cameraman makes his way to the corner of Bolsover Street and Clipstone Street, two other people are also looking up at the sky - one of whom is wielding a mobile phone camera too.

The focus in the footage turns upwards and three white dots can be seen whizzing across the sky in a triangle formation, quickly followed by two white dots of a similar size.

A bigger, brighter and more slow-moving white object - supposedly the aforementioned mother ship - then appears, circles around briefly and shoots off.

'Are you getting that up there? I couldn't see before because the sun as flashing by,' a voice is heard saying in the background.

YouTube viewers of the footage appear largely unconvinced by it, with many crediting the appearance of the 'UFOs' to the wonders of Photoshop.

Others, however, have posted below the video that they were there during the paranormal activity in question and therefore the footage must be genuine.

Time now for you to check out the film for yourself and let us know what YOU think...