London's top-flight index has joined global markets by crashing into the red over fears that rising inflation could force central banks to hike interest rates.
The FTSE 100 Index sank by more than 2.5% - hitting its lowest level since late 2016 at 7,079.41 - before paring losses to fall 163.57 points to 7,167.08.
Across Europe, Germany's Dax plummeted by 2.7% and the Cac 40 in France was languishing 2.1% lower.
Falls in Europe followed a brutal overnight sell-off in Asia and on Wall Street, where the Dow Jones Industrial Average and the S&P 500 dropped 4.6% and 4.1% respectively.
Tokyo's Nikkei 225 Day closed down 4.7%, while the Hong Kong's Hang Seng Index plunged 5% lower.
The global equity sell-off has been building since last Friday when traders became spooked by the prospect of tighter monetary policy after the US posted strong average earnings data.
The crash follows deep losses during Monday's session when more than £27 billion was wiped off the value of London's blue-chip stocks.