TWELVE opponents of Heathrow Airport’s expansion occupied the northern runway yesterday by chaining themselves to railings and binding themselves together.

Six protesters were arrested after activists from Plane Stupid cut through the perimeter fence at 3.30am and caused flight delays and 13 cancellations over three hours.

Three bolted their necks onto the metal barricade with cycle locks, but these were cut off by police who arrived on the scene with angle grinders.