An aggressive Belgian brewery hits the headlines buying up beer brands around the world. Teams of Interbrew M&A executives and lawyers, clad in striped shirts and braces, plot in smoke-filled rooms alongside high powered advisers from McKinsey, Goldman Sachs and Lazard.

Screens flicker with win-or-lose scenarios for the brewing battlefield. What if South African Breweries (SAB) merges first with Scottish & Newcastle? How would SAB shareholders react to more cash but less stock, or less cash and more stock?