Revealed: UKs multibillion AI drive is built on ‘phantom investments he press releases announcing a gleaming supercomputer on the outskirts of north London depict a glass and concrete building, rising from a tree lined street. Accompanied by images of glowing blue robot faces, it looks like the centre of a technological revolution. By the end of this year, that artists impression is supposed to be a reality. But when the Guardian visited last month, there was no sign of it. Instead, the four...