Four environmental activists glued themselves together and chained themselves to the Labour leader Jeremy Corbyn's house.(Subscribe: bit.ly/C4_News_Subscribe) Its unclear just how much disruption that has caused - but more than 300 people have now been arrested after 3 days of protests in London over climate change. 'Extinction Rebellion' has blocked traffic at major sites across the city and three activists today also glued themselves to a train at Canary Wharf station.