The London Stock Exchange and German rival Deutsche Borse have reached a deal on a £21 billion merger to create one of the biggest exchange companies in the world.
Billed as a "merger of equals", the deal will see the LSE make up 45.6% of the joint firm and Deutsche Borse the remaining 54.4%.
Xavier Rolet, chief executive of London Stock Exchange Group, said: "We are creating an industry-defining combination which will be a leading global market infrastructure business."