Amazon plans to move its UK HQ in downmarket Slough to east London. The company will put its headquarters in a 15-story building called Principal Place, which will have a swimming pool, tennis and basketball court. Amazon will have 5,000 employees there. Google, meanwhile, is putting its UK headquarters at King’s Cross, a few miles west. UK sales of around £4.3 billion will continue to be booked to Amazon’s Luxembourg-based unit.