The global movement fueled by Greta Thunberg years ago when he began to skip school every Friday to protest outside the Swedish parliament.
Fast forward thirteen months and the whole world was skipping school and work on climate change called for urgent action.
Striker gathered in London, Brighton, Manchester, Newcastle, Bournemouth, Edinburgh, Cardiff, Belfast and many more.
They stand in solidarity with people around the world, including Berlin, Frankfurt, New York, Melbourne, Hong Kong, Indonesia and Bangkok.
And they are not short of creativity in getting their message.