The EU bigwig spoke with British Prime Minister Theresa May today at the Chancellery in Berlin as part of talks with outgoing US President Barack Obama and other European leaders.

A conspiracy theory surfaced earlier this year of a secret society within the EU after a number of senior leaders were photographed making the sign, which is allegedly used by members of the mythological illuminati.

Others photographed using the hand sign in the rhombus shape have included Mrs May herself, and European Commission President Jean Claude Juncker.

The sign is often referred to as a Merkel Diamond, due to her frequent use of it.

Mrs May was snapped imitating the 'Merkel diamond' while giving a speech outside the Palace of Westminster on July 11.