There's something wrong with this picture of David Cameron

David Cameron spent part of his Tuesday campaigning in Hendon, a Labour-Conservative marginal in north west London.

Here's a picture of the prime minister giving a speech at the Utility Warehouse.

But there's something wrong with the above image. Is it that David Cameron isn't wearing a tie? The look on Boris Johnson's face?

Or is it this man?

This may be the greatest Ukip photobomb ever.

We salute you, Ukip interloper.

Picture: Getty

HT Elliot Wagland

More: The internet is obsessed with David Cameron's sweaty lip