People gather at the Houses of Parliament for the Stop Trump protest. 20 February 2017. The House of Parliament are discussing a public petition to stop the state visit of the US President.
People gather at the Houses of Parliament for the Stop Trump protest (Picture: SWNS)

Thousands are expected to protest outside Parliament and across the UK this evening as MPs debate Donald Trump’s state visit to Britain.

In a packed Westminster Hall, MPs are considering Theresa May’s decision to extend the invitation to the US president.

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The debate has been held in response to a petition signed by almost two million people calling on the Republican’s state visit to be halted.

Anti-Trump chants could be heard from Parliament Square before the debate, and appeared to die down as Labour MP Paul Flynn opened proceedings.

MPs are also considering an alternative petition, backed by almost 312,000 signatories, demanding the state visit goes ahead.

People gather at the Houses of Parliament for the Stop Trump protest. 20 February 2017. The House of Parliament are discussing a public petition to stop the state visit of the US President.
(Picture; SWNS)
People gather at the Houses of Parliament for the Stop Trump protest. 20 February 2017. The House of Parliament are discussing a public petition to stop the state visit of the US President.
(Picture: SWNS)
A demonstrator reaches down to a pile of placards during a protest against U.S. President Donald Trump in London, Britain February 20, 2017. REUTERS/Toby Melville FOR EDITORIAL USE ONLY. NO RESALES. NO ARCHIVES.
(Picture: REUTERS/Toby Melville)
Demonstrators attend a rally in Westminster protesting against Donald Trump on the day that the state visit by the US president is debated in Parliament. PRESS ASSOCIATION Photo. Picture date: Monday February 20, 2017. MPs will consider Theresa May's decision to extend the invitation to Mr Trump in a debate being held in response to petitions signed by millions of Britons. See PA story POLITICS Trump. Photo credit should read: Dominic Lipinski/PA Wire
(Picture: Dominic Lipinski/PA Wire)

The Stop Trump coalition has called a nationwide day of action and dozens of protests have been co-ordinated by the One Day Without Us movement celebrating the contribution of immigrants to British society.

The rally in Parliament Square, which organisers claimed will attract more than 20,000 people, will be addressed by speakers including joint Green Party leader Caroline Lucas and comic Shappi Khorsandi.