Trafalgar Square

The 'Really Good', by artist David Shrigley which has become the eleventh sculpture to be installed on Trafalgar Square's fourth plinth, in London. PRESS ASSOCIATION Photo. Picture date: Thursday September 29, 2016. Photo credit should read: Philip Toscano/PA Wire

Philip Toscana/PA

The ‘Really Good’, by artist David Shrigley which has become the eleventh sculpture to be installed on Trafalgar Square’s fourth plinth, in London, Credit: Philip Toscano/PA

Members of the Royal Tank Regiment stand on a replica First World War Mark IV tank in London's Trafalgar Square marking the centenary of an armoured vehicle's first-ever deployment during the Battle of the Somme. PRESS ASSOCIATION Photo. Picture date: Thursday September 15, 2016. Photo credit should read: Daniel Leal-Olivas/PA Wire

Daniel Leal-Olivas/PA

Members of the Royal Tank Regiment stand on a replica First World War Mark IV tank in London’s Trafalgar Square marking the centenary of an armoured vehicle’s first-ever deployment during the Battle of the Somme

Greenpeace activists scale Nelson's colomn in protest over pollution levels.

Andy Rain/EPA

An activist from the enviromental oganisation Greenpeace attaches a replica gas mask to the face of the statue of Nelson on Nelson’s column during a protest in Trafalgar Square, London. Greenpeace activists scaled numerous statues across the capital to highlight dangerous levels of pollution.

The Six New Proposed Artworks For The Fourth Plinth Are Unveiled...LONDON, ENGLAND - SEPTEMBER 24:  Ekow Eshun, Chair of the judges looks a model of 'Gift Horse' by Hans Haacke as it is unveiled as a proposed design for the Fourth Plinth at  the Crypt, St Martin-in-the-Feilds on September 24, 2013 in London, England. The two selected artists will be announced in early 2014, and their works will be unveiled in Trafalgar Square in 2015 and 2016 respectively. (Photo by Bethany Clarke/Getty Images)

Bethany Clarke/Getty

Ekow Eshun, chair of the judges, looks a model of ‘Gift Horse’ by Hans Haacke as it is unveiled as a proposed design for the Fourth Plinth at Trafalgar Square in London. Two selected artists will be announced in early 2014, and their works will be unveiled in Trafalgar Square in 2015 and 2016 respectively. 

A blue French cockerel by German artist Katharina Fritsch is unveiled on top of the forth plinth in Trafalgar Square

Dan Kitwood/Getty Images

A blue French cockerel by German artist Katharina Fritsch is unveiled in Trafalgar Square in London, England. The five-metre high fibreglass cockerel was installed as the ninth sculpture to occupy the vacant fourth plinth in Trafalgar Square.