Stock markets in the US and Europe plunged on Thursday as fears about US-China trade tensions and global growth continue to mount.
All three main Wall Street indexes fell more than two per cent, with the Dow Jones Industrial Average sliding 700 points.
In London, the FTSE 100 tumbled 3.3 per cent, or more than 200 points, to its lowest level in two years.
Falls on European markets were even sharper, with Paris and Frankfurst both shedding 3.5 per cent.
Analysts said the arrest of Chinese telecoms giant Huawei's chief financial officer in Canada had revived worries over the US's trade war with China.