UK-based beverages group Diageo has warned that the terms of sale of its wholly-owned fastfood subsidiary Burger King are under review. Diageo agreed the sale of Burger King in July to a financial consortium of Texas Pacific Group, Bain Capital and Goldman Sachs Capital Partners. The deal was dependent on the fastfood restaurant chain's performance, but a slump in sales and aggressive pricing practices of Burger King's competitors has meant that the sale is now under threat of collapse.