A large crowd of young people have skipped school as part of a global climate strike. The international 'Fridays For Future' movement was started by Greta Thunberg in 2018 and encourages pupils to protest against climate change by not attending school on Fridays. The London protest started on Parliament Square before continuing down Whitehall. Report by Woodsli. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn