The UK’s William Hill and Canada’s Amaya are in discussions that could lead to a £4.6bn all share merger to create one of the world’s largest gambling companies, as the groups become swept up in the wave of consolidation hitting the betting industry. On Saturday, the boards of the two companies confirmed they were in talks in response to press speculation, saying that a merger would create a clear international leader across online sports betting, poker and casino games. The merger would be classified as a reverse takeover, with the smaller group William Hill taking over the larger company, Amaya....