Skripal is a former colonel in Russian military intelligence who was jailed in his country for betraying agents to Britain's MI6 secret service and moved there in a spy swap in 2010.
The U.K. has accused Russian Federation of bearing responsibility for the attack, which British officials say involved a military-grade nerve agent of a type developed secretly by Russian Federation.
May says the March 4 attack on Sergei Skripal is a "flagrant breach of global law and the chemical weapons convention". Critics say United Kingdom authorities have been slow to investigate the origins of the wealth invested in London's financial district and property market.
She said Britain is taking a tough line because of frustration at recent advances of Russian-backed Syrian government forces against Western-backed rebels.
"We will never tolerate a threat to the life of British citizens and others on British soil from the Russian government", she said, prompting applause.
On March 4 spy Sergei Skripal, 66, and his daughter Yulia, 33, are found unconscious, slumped on a bench outside a shopping centre in Salisbury.
To recall, the police appealed to the local residents asking whether they saw Skripal's auto on March 4, i.e. on the day of poisoning. But Britain has the nerve agent, too, and the primary lab for making deadly chemicals is just eight miles from Salisbury. It says 400 witnesses have already given statements.
Putin's comments came a few hours after British Foreign Secretary Boris Johnson said he has evidence that Russian Federation has been stockpiling a nerve agent in violation of worldwide law "very likely for the purposes of assassination". British Ambassador Laurie Bristow was called to the Foreign Ministry on Saturday morning to be informed of the moves.
The representatives of Russia's Foreign Ministry added that the British Council is not anymore functioning in Russian Federation.
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The Ukranian side haven't lost in the five matches they've played since returning from their winter break. Both the teams created similar amount of chances going forward in spite of only one shot being on target.
'That fact demonstrates the most telling difference between Britain and Putin: we have friends across the world and he does not'.
The new facility will be located at the Porton Down military research center, which was instrumental in identifying Russian Federation as the source of the nerve agent used to target Sergei Skripal and his daughter earlier this month.
It added: "Twenty-three diplomatic staff of the UK Embassy in Moscow are declared persona non grata and are to be expelled from Russian Federation within a week".
'It is Russian Federation that is in flagrant breach of global law and the Chemical Weapons Convention'.
Days later, police announced the attack on Mr Skripal and his daughter was being treated as attempted murder as they had been "targeted specifically". The statement also said Russian Federation is ending an agreement to reopen the British consulate in St. Petersburg.
It ordered the diplomats to leave within a week.
Russia, which denies any involvement in the incident, condemned May's decision to expel Russian envoys as "unacceptable" and had vowed a "swift response". They are now in critical condition in a local hospital.
She tells British lawmakers that the military-grade nerve agent used was identified as belonging to a group of nerve agents known as Novichok and of a type developed by Russian Federation.