US stock markets have dropped significantly, following major declines in Europe and Asia.
All three Wall Street stock indices have declined up to 2%, amid growing concern over global growth and trade tensions between the United States and China.
In London, shares were down 2.5%, with the FTSE 1
Other major European markets showed even larger falls as a sell-off started in Asia has accelerated.  The price of oil has also plummeted, with the lower Brent of 1.9% to $ 60.39 a barrel.
Analysts said the arrest of the Chinese telecommunications giant, Huawei's chief financial officer in Canada, reignited concerns over the US trade war with China.
The renewed falls on Wall Street came as trade resumed after Wednesday's stock market closed to celebrate the funeral of former president George HW Bush.
The latest recession canceled the hopes that the markets could return to health after Tuesday's losses, when the Dow Jones index finished at -3%.
By mid-afternoon, the index of the 100 shares in London was trading at 6,750.23 points, while the CAC 40 in Paris and the Dax in Frankfurt were both 2.6% lower.
The most affected sectors included miners, oil companies, car manufacturers and technology stocks.
Among the largest investors in London were the mining companies Antofagasta, down 6.7% and Glencore, which decreased by 4%.
On the FTSE 250, which fell 2.6%, Thomas Cook gave up on Wednesday's earnings for the trade fell by 13.7%, while Premier Oil slipped by 9.6%.
Previously, Asian markets also fell, with the Nikkei Tokyo index down by 1.9% and Hang Seng in Hong Kong down by 2.5%.
"Investors are back in risk-off mode, with markets falling in the UK, continental Europe and all of Asia," said Russ Mold, director of investment at AJ Bell.
"Markets are worried about many things: growth, rising interest rates and the trade war between the United States and China."
Norman Villamin, Head of Investment at Union Bancaire Privée, having said that the US-China confrontation represents much more than a simple struggle for commerce.
It is not about commerce, but about who will be the economic and political leader of the world in 10 or 20 years. It's about technology and who dominates that landscape, "he said.
Markets are frightened & # 39;
Laith Khalaf, senior analyst at Hargreaves Lansdown, said:" The arrest of the CFO of Huawei has reignited fears that the trade reconciliation between the United States and China can not be imminent any time soon.
"The market is frightened by damaging a continuing trade war could make global economic pro speculations, and that is affecting share prices in the UK and abroad.
He added that" the valuation on The UK stock market seems close to its historical average, which means it is neither cheap Black Friday nor the expensive dotcom. "
" However, it is unlikely to resume significantly until we c & # 39; There is more clarity about UK withdrawal from the EU. Meanwhile, US trade policy continues to undermine confidence in global markets. "
Analysts are worried about a series of new tariffs will slow down global trade.
In October, the US trade deficit – which measures the difference between imports and exports of goods and services – has risen to $ 55.5 billion, the highest level in a decade
in exports, as the main markets, including China, & # 39; European Union and Mexico bought fewer US products.
All three markets hit US goods with new import duties in retaliation for tariffs imposed by the Trump administration.
Oil prices plummeted as traders waited for news from the Opec oil producing nations meeting in Vienna, with some member states eager to agree on a production cut to drive up the prices.
"We are looking for a sufficient cut to balance the market, equally distributed between countries," said Saudi Arabia's oil minister, Khalid al-Falih, before the meeting.