Of all FTSE 100 Index companies, only one rose as U.K. shares posted their biggest slump since the Feb. 11 rout.
With polls increasingly pointing to a lead for the “Leave” campaign in the June 23 referendum on European Union membership, the FTSE 100 sank 2 percent at the close of trading in London. That marked a fourth day of declines for the gauge, its longest losing streak since January.
Anglo American Plc and Antofagasta Plc led the declines in the FTSE 100, falling more than 5 percent. Ashtead Group Plc was the only one that rose, climbing 3 percent after the company said it will start a share buyback program.
The broader FTSE All-Share Index and Ireland’s ISEQ Index also fell. The regional Stoxx Europe 600 Index dropped 1.9 percent to its lowest level since February.