More than 500 Extinction Rebellion protesters have been arrested in London as they continue two weeks of demonstrations demanding urgent government action on the climate crisis.

Organisers have blockaded key sites in central London including Westminster Bridge, Trafalgar Square and the roads outside Downing Street with some gluing and chaining themselves to roads and vehicles.

Animal Rebellion, an offshoot of Extinction Rebellion, has also shut down Smithfield Meat Market by replacing butchery stalls with organic fruit and vegetables.

It comes as Boris Johnson dismissed Extinction Rebellion as “uncooperative crusties” who should stop blocking the streets of the capital with their “heaving hemp-smelling bivouacs”.