LONDON: UK’s main stock indexes plunged on Thursday, tracking a sharp selloff in global equities, as investors shed riskier assets after Russia launched an all-out invasion of Ukraine by land, air and sea.

The benchmark FTSE 100 index sank 3.8% by the close, while the domestically focussed mid-cap index fell 2.6%.

Russian forces invaded Ukraine by land, sea and air in the biggest attack by one state against another in Europe since World War Two.

The United States and its allies will impose “severe sanctions” on Russia, US President Joe Biden said.

Russia-exposed miners such as Polymetal, EVRAZ and Petropavlovsk plummeted between 27.0% and 37.8%, while London-listed depository shares of Russian bank Sberbank Rossii PAO plunged 74.2%.

Losses on the commodity-heavy FTSE 100 were smaller than its European peers.

The FTSE 100 has outshone its pan-European peers so far this year after underperforming for five straight years, helped by a jump in heavyweight commodity stocks due to geopolitical tensions and strength in financial shares in a higher interest-rate environment.

Banks were the worst performers, down 7.4%.

“Since the Bank of England announced its interest rate hike a few months ago, we have seen a decent move higher in the UK banking sector because it was pretty undervalued,” said David Madden, a market analyst with Equiti Capital.

“They are down today because investors are worried if anything is going to put the brakes on the Bank of England from continuing down the path to rate hikes, it would be this sort of thing that could cause economic disruption across Europe.”

Britain’s largest high-street bank Lloyds fell 10.8% after missing profit expectations.

Shares of BAE Systems rose 5.2% after the defence company forecast another year of sales growth and margin expansion in 2022 and reported a 13% increase in 2021 core earnings.