The UK has sanctioned a Russian military officer accused of helping poison former double agent Sergei Skripal with novichok in Salisbury.
The Foreign Office has imposed 56 new sanctions on people and entities linked to Russia, including those in the Wagner mercenary group that operates unofficially on Vladimir Putin's behalf, and companies based in China, Turkey and central Asia supplying parts to Russia.
Denis Sergeev, who the Met Police charged over the attempted murder of double agent Mr Skripal, has been sanctioned under the chemical weapons sanctions regime.
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"Sergeev provided support in the preparation and use of the chemical weapon novichok in Salisbury...and provided a coordinating role in London on the weekend of the attack," the Foreign Office said.
Mr Skripal and his daughter Yulia were found unconscious on a bench in Salisbury, Wiltshire, in March 2018.
Police said nerve agent novichok was applied to the front door of his home.
Three Russians, who police said are GRU military intelligence officers, have been charged in absentia over the incident.
Sergeev was the last to be charged after police said he was acting under the alias Sergey Fedotov.
A public inquiry into the death of Dawn Sturgess, a woman unwittingly killed after coming across a sample perfume bottle containing novichok, heard Mr Skripal believed Mr Putin had ordered the attack on him.
Moscow has repeatedly rejected British accusations the Kremlin was involved.
The inquiry heard the amount of novichok in the perfume bottle was enough to kill thousands of people.
Also included in the latest sanctions round are companies supplying Russia with military equipment being used in its war against Ukraine.
Ten companies based in China, and a handful from Turkey, Estonia, Kazakhstan and Uzbekistan, are on the list for supplying and producing machine tools, microelectronics and components for drones used by Russia in Ukraine.
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Russian-based mercenary groups operating in sub-Saharan Africa with links to the Kremlin are also on the list.
The Foreign Office said they have threatened peace and security in Libya, Mali and the Central African Republic, and have committed widespread human rights abuses across Africa.
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Foreign Secretary David Lammy said: "Today's measures will continue to push back on the Kremlin's corrosive foreign policy, undermining Russia's attempts to foster instability across Africa and disrupting the supply of vital equipment for Putin's war machine.
"And smashing the illicit international networks that Russia has worked so hard to forge.
"Putin is nearly 1,000 days into a war he thought would only take a few. He will fail and I will continue to bear down on the Kremlin and support the Ukrainian people in their fight for freedom."