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More 'rainbow clouds' light up the sky over London

They are extremely rare and the chances are, you've never seen one before.

More 'rainbow clouds' light up the sky over London

Rare 'rainbow clouds' have been lighting up the sky over parts of London. Officially these clouds are known as iridescent clouds, where very small water droplets or ice crystals scatter light individually.

Credit: Mark Mason-Gardner

The effect is similar to the colours often seen when oil lies on the surface of water.

Credit: Mark Mason-Gardner

Have you seen any? Tweet us @itvlondon or go to our Facebook page.

Credit: Mark Mason-Gardner

It's not the first time these clouds have appeared over the South East. Earlier this month, rainbow clouds were spotted over Surrey.

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