BBC: Anti-Heathrow expansion protesters are to discuss their next move if the airport gets the go-ahead to build a third runway and sixth terminal. Local residents, trade unionists and MPs will meet at a conference in Harlington, west London, on Saturday. They will be joined by green protesters from the Camp for Climate Action. The Heathrow Association for the Control of Aircraft Noise (Hacan) said plans could range from “mass letter-writing to mass direct …