Tens of thousands of people live in buildings in Britain constructed with materials that have failed fire tests undertaken after the Grenfell Tower fire, according to a list of the buildings compiled from public statements.

All of the buildings use an aluminum paneling similar to the type that worsened the spread of the fire last month at Grenfell Tower, which was London’s deadliest blaze in decades.

Authorities have not identified all of the 199 buildings that have failed fire safety testing. But statements by local councils and management companies reveal the locations of 104 of them.

The buildings range from refurbished 1960s tower blocks to newly constructed student housing. Most are in the London or Manchester areas.

Most of the buildings contain local council housing that is made available to low-income residents and other eligible groups, like single mothers.

Four of the buildings have been evacuated, and the cladding is being replaced on dozens of others. But not every building has been determined to be at an elevated risk of fire: Features such as fire doors or other containment structures, when properly installed, can contain a fire.

What’s being tested Local housing councils are testing any buildings taller than six stories that have aluminum composite panels. The core of many of the panels is composed of combustible plastic material. A sample of cladding. Gov.uk handout