Paraic O'Brien is a Correspondent for Channel 4 News.
Paraic's investigations include the multi-award winning "Bruce Lee, King of Romania's Sewers", a searing film about the subterranean life of Bucharest's drug addicts. His expose of how the global online game Habbo Hotel was putting children at risk, resulted in a mass exodus of investors. His investigation into the death of Alois Dvorzac in a British detention centre exposed serious flaws in the immigration system.
He was the first TV reporter on the ground in Brixton and Croydon as the riots broke out in 2011. He also once had a minor altercation with Russell Brand.
Before joining Channel 4 News he worked at the BBC as an investigations reporter for BBC London News and Newsnight on occasion. Prior to that he was a community worker in Ireland and south London.
The UN refugee agency says more than 2.5 million people have left Ukraine since the start of the war.
Over two million have now fled the conflict in Ukraine. Over 2 million personal stories.
The scale of the refugee crisis here continues to defy all imagination – “a million human tragedies” as Poland’s border guard service put it.
We are in the border town of Uzhhorod, where we spoke again to a 12-year-old girl who fled her home in Kharkiv who is desperate to come to Britain, but can’t under current government rules.
The UK’s Disasters Emergency Committee Appeal for Ukraine has now raised more than £85 million.
So far the exodus from Ukraine has seen a vast tide of humanity heading west.
Hundreds of thousands of desperate people are fleeing Ukraine – among them many African students, who have had their dreams of an education dashed by the violence.
More than 500,000 people have already fled Ukraine, according to the United Nations – their long journeys made even more traumatic by the freezing temperatures.
First thing this morning the United Nations said that at least 368,000 refugees had already left Ukraine, a number which has been rising by the hour.
The UN said today that more than 150,000 refugees have left Ukraine since the invasion began – most of them heading to Poland and others managing to get into other neighbouring countries like Slovakia.
Thousands of people are already fleeing their homes, taking to their cars, packing onto trains and even walking on foot, carrying their possessions with them as the UN warned that the war could force as many as four million people to seek refuge abroad.
From Moscow to Brussels – along with tougher sanctions there’s been a flurry of diplomacy from Britain over Ukraine – Boris Johnson warned the stand-off had entered its “most dangerous moment” as he met the Nato secretary-general.
Yesterday, Sir Keir Starmer faced angry protesters accusing him of ‘protecting paedophiles’. We met some of the protesters to ask what they thought of Boris Johnson’s comments.
The diplomatic dance over Ukraine has ratcheted up again, with French President Emmanuel Macron flying to Moscow for talks with President Putin.
Ukraine rolled out the red carpet for Boris Johnson, greeting him with a military ceremony and a trip to the Mariinskyi palace.