Boris Johnson: 'Difficult year' for travel ahead

Prime Minister Boris Johnson visits a laboratory in Potters Bar, Hertfordshire. He says that the government is looking into changing the rules for people who are double vaccinated, but stresses that this is going to be a "difficult year" for travel regardless. Report by Taylorjo. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn