The FTSE 100 Index climbed, helped by a 20 percent rally in shares of SABMiller Plc after Anheuser-Busch InBev NV said it intends to make an offer for the brewer in a deal that may top $100 billion.
Glencore Plc, the worst performer on the U.K. benchmark this year, rose 5.2 percent after selling $2.5 billion of new shares to pay down debt to help protect its credit rating.
The FTSE 100 added 1.5 percent to 6,229.21 at the close in London. Trading has been volatile as investors await Thursday’s Federal Reserve rate announcement. The broader FTSE All-Share Index gained 1.3 percent today, while Ireland’s ISEQ Index rose 0.3 percent.