Restoration and Renewal of the Palace of Westminster

On the point of fire safety, could the Leader of the House confirm that the tens of millions of pounds—£140 million or so—that has been spent on the fire safety system to date protects those of us who may be working or in the building at the time, so that we could escape; but it does not protect the building? Would he also confirm that he is aware of, and understands, the responsibilities that UNESCO places on the Government of the day to make sure that this world heritage site does survive?