The announcements include investments by Vodafone and Barclays designed to support start-ups; and the opening of a video games studio by one of Japan's richest businessmen.
The news was timed to coincide with the Olympics to maximise publicity. It follows recent announcements from Google, Facebook, Amazon, Intel and Skype about new projects in London.
Tech City - a hub of digital and creative businesses located in East London - accounts for the bulk of the latest news.
Source: BBC News
