European stocks have fallen sharply as concerns about a trade war and higher US bond yields have stoked concerns among global investors.
In London, the UK's FTSE 100 share index fell 1.7% to 7,023.
Markets in Asia had plunged to a 19-month low after US shares suffered their worst losses in eight months.
US President Donald Trump called the falls a "correction", but said the Federal Reserve, which has been raising interest rises, had "gone crazy"