The Old Street roundabout is to be given a £50 million makeover to become a centre for technology start-ups and entrepreneurs. It will become Europe's largest civic indoor space, hosting classrooms and workshops equipped with the latest 3D printing technology.
Several large international firms have also announced new investments in the area, including Microsoft, IBM and KPMG.
Boris Johnson says ''our new centre will provide not only a vital resource to nurture upcoming technology and creative superstars from around the world, it will drive huge investment into the capital and help create thousands of jobs''
Digital Firm Editd is one company which says it can't get the right expertise - as the government promises to invest in London's 'Tech City'
More top news
A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.