Protesters have closed part of Moorgate, demonstrating outside the offices of Drax Power.
Drax appear to have been targeted because of its intention to build a new gas-fired power station in Yorkshire.
Moorgate has been closed to traffic in both directions between the junction of Lothbury and London Wall due to the protests.
Action has included sit ins on the street, banners raised on scaffolding and a number of people dressed in while one piece suits.
Recent Stories