UK shares have fallen sharply in morning trading, sending the benchmark FTSE 100 index to its lowest level since December 2016.
Indexes in London and other European markets were all down more than 2% in a generalised share sell-off.
Worst-hit sectors included miners, oil companies, carmakers and tech stocks.
Analysts said the arrest of Chinese telecoms giant Huawei’s chief financial officer in Canada had revived worries over US-China trade tensions.
By mid-morning, London’s 100-share index was down 2.05% at 6,780.06.
The Cac-40 in Paris and Frankfurt’s Dax were 2.1% and 2.3% lower respectively.