The family-friendly event organised by Greenpeace will see hundreds of people in polar bear and other Arctic-themed costumes walk and cycle over Westminster Bridge and past the London Eye on their way to the Shell Centre, in protest against the oil giant’s plans to drill in the Arctic. The London parade will be the spectacular highlight of Ice Ride, a global day of action to protect the Arctic marked by mass cycling events happening in 75 cities worldwide, from Bangkok to Johannesburg, Toronto to Mexico City.