Thousands of bodies calling for a accord on altitude change at abutting week's United Nations appointment in Copenhagen marched through axial London on Saturday, encircling the Houses of Parliament in a animal beachcomber of blue-clad demonstrators.London's Metropolitan Police said about 20,000 bodies abutting the Stop Altitude Chaos march, which began at Grosvenor Square and anguish its way to the Parliament architecture on the River Thames. Organizers put the assembly at 40,000.We capital to accomplish a absolute statement," said retired abecedary Pip Cartwright, 72, from Witney southern England. "It's for the future. It's not my bearing that's activity to accept the botheration to solve.The affiliation - which includes groups such as Oxfam, Greenpeace, Friends of the Earth and the WWF - alleged the beef "The Wave," and organizers asked marchers to dress in blue. The advance concluded with a accumulation "wave" about Parliament.