Video - British fighters in Ukraine share footage of the frontline with BBC Newsnight

There's no doubt Russia's invasion of Ukraine, nearly one year ago, stirred up strong feelings in this country. But how many Britons felt so strongly that they actually went to fight there? Thousands of foreign volunteers are fighting for Ukraine, evidently taking big risks, among them a UK contingent. Eight British fighters and aid workers have been killed there since last February, and others badly injured. The BBC’s Emma Vardy has been given exclusive access for Newsnight to a unit who've spent months filming their experiences on the front lines, and to family members back in the UK.