Britain announced sanctions on oligarch Vladimir Potanin, known as Russia's "Nickel King" on Wednesday, describing him as Russia's second-richest man.
Potanin was included in the latest wave of 13 new sanctions listings which included other business figures, financial firms and other entities.
"Potanin continues to amass wealth as he supports Putin’s regime, acquiring Rosbank, and shares in Tinkoff Bank in the period since Russia’s invasion of Ukraine," the government press notice accompanying the announcement said.
Potanin is one of Russia's richest people, although his net worth depends largely on the value of his 36% stake in Nornickel GMKN.MM, the world's largest producer of palladium and refined nickel.
The British sanctions list said Potanin had been included because he was: "obtaining a benefit from or supporting the Government of Russia by owning or controlling Rosbank. Rosbank is carrying on business in the Russian financial services sector, which is a sector of strategic significance to the Government of Russia."