Following tests conducted in the wake of the 2017 Grenfell Tower disaster, Haringey Council announced on 20 June 2018 the evacuation of two of the blocks. Eleven of the blocks were structurally unsafe and vulnerable to collapse if a gas pipe or gas canister were to explode or if vehicle were to strike the base of the buildings. Tangmere House, a six-storey block, and Northholt, an 18-storey block, are those worst affected, and would be demolished. The blocks were built using the same large-panel system used on Ronan Point, where a gas explosion in 1968 caused progressive collapse, killing four people.