Facebook will open a new London headquarters next year and create another 500 jobs, the leading social network said yesterday, despite uncertainty over Brexit.The group said the move will take its UK workforce to 1,500 staff, adding that Britain "remains one of the best places to be a tech company", amid ongoing jitters over the nation's looming exit from the European Union. The news comes one week after U.S. tech giant Google confirmed it would expand its vast London campus in a move that could bring 3,000 more jobs.The Facebook announcement will be confirmed later at the annual meeting of top business lobby group the Confederation of British Industry, which is the country's top employers' organisation. A spokeswoman added that the new office is currently under construction in the bohemian central district of Fitzrovia. London Mayor Sadiq Khan welcomed the news from the U.S. giant. Last Tuesday, Google revealed it will add a new office building to a complex currently under development behind London's King's Cross train station. An estimated 3,000 jobs will be created by the move. A total of 7,000 Google staff will eventually be working at the hub, which is set to open in 2018.