Russian Poisoning Timeline
Russian ex-spy and his daughter poisoned in UK, sparking diplomatic row
Sergei Skripal and daughter Yulia found unconscious in Salisbury, Wiltshire
The woman found slumped on a shopping centre bench alongside a former Russian agent convicted of spying for Britain is his daughter, it has emerged.
Yulia Skripal, in her 30s, and father Sergei, 66, are critically ill in hospital after being found unconscious in Salisbury, Wiltshire, on Sunday.
UK police are trying to find out what "unknown substance" harmed the pair.
A number of emergency services workers were assessed immediately after the incident - and one remains in hospital.
Poison identified as Novichok, a nerve agent developed by Russia
Former spy Sergei Skripal and his daughter were poisoned by a military-grade nerve agent of a type developed by Russia, Theresa May has told MPs.
The PM said it was "highly likely" Russia was responsible for the Salisbury attack.
The Foreign Office summoned Russia's ambassador to provide an explanation.
Mrs May said if there is no "credible response" by the end of Tuesday, the UK would conclude there has been an "unlawful use of force" by Moscow.
Russia expels 23 British diplomats in tit-for-tat
Russia is to expel 23 British diplomats in a row over the nerve agent attack on an-ex spy and his daughter in the UK.
The Russian foreign ministry said the UK staff would be expelled from Moscow within a week in response to Britain's decision to expel 23 Russian diplomats.
It also said it would close the British Council in Russia, which promotes cultural ties between the nations, and the British Consulate in St Petersburg.
Sergei Skripal and his daughter Yulia remain critically ill in hospital.
Yulia Skripal leaves hospital, issues first public statement
Yulia Skripal: ‘No one speaks for me’
Yulia Skripal, the poisoned daughter of Russian ex-spy Sergei, has rejected Russian embassy help "at the moment".
The 33-year-old, who was discharged from hospital on Monday, said her father is "still seriously ill".
In a statement issued through police, she said she was not yet strong enough to give a full media interview but "no-one speaks for me, or for my father".
The Russian embassy said it doubted the statement "really belongs to Yulia" and said it raised new questions.
Salisbury toxic hotspots clean-up begins
Nine locations in Salisbury which are to be decontaminated following the poisoning of an ex-spy and his daughter have been surrounded by new barriers.
The Mill pub and Zizzi restaurant are among the places deemed to be still at risk by government scientists.
But officials say the city remains "safe for residents and visitors" and extra precautions need not be taken.
The nerve agent Novichok is believed to have been used in liquid form to target Sergei and Yulia Skripal last month.
Sergei Skripal moved to secure location, as investigation continues
Sergei Skripal leaves hospital, not clear if he’s with his daughter
Russian ex-spy Sergei Skripal has been discharged from hospital, two months after being poisoned with a nerve agent in Salisbury.
The 66-year-old was found slumped on a park bench in the city on 4 March, with his daughter Yulia.
They were taken to Salisbury District Hospital's intensive care unit, where they were stabilised after being exposed to Novichok.
Ms Skripal was released on 9 April and was moved to a secure location.
Yulia Skripal makes on-camera statement
The daughter of an ex-Russian spy poisoned in Salisbury has said she is "lucky to be alive" after the attack.
Yulia Skripal and her father, Sergei, were exposed to nerve agent Novichok in the city on 4 March.
In her first filmed public statement since the attack, Ms Skripal told Reuters that her life had been "turned upside down" but she hoped to return to Russia in the future.
Her father was discharged from hospital earlier this month.
Murder inquiry launched after new Novichok poisoning
Pair found unconscious in Wiltshire poisoned with same nerve agent as Skripals
A man and woman are in a critical condition after being exposed to an unknown substance, which counter terrorism officers are investigating.
The pair, believed to be Charlie Rowley, 45, and Dawn Sturgess, 44, were found unconscious at a house in Amesbury, Wiltshire, on Saturday.
It is understood tests are being carried out on the substance at a government chemical weapons laboratory.
Amesbury is about eight miles from the Salisbury Russian spy poisoning site.
Dawn Sturgess, 44, dies after exposure to Novichok
Police have launched a murder inquiry after a woman exposed to the nerve agent Novichok in Wiltshire died.
Dawn Sturgess, 44, died in hospital on Sunday evening after falling ill on 30 June.
Charlie Rowley, 45, who was also exposed to the nerve agent in Amesbury, remains critically ill in hospital.
Kremlin spokesman Dmitry Peskov said Russia was "deeply concerned" about the incident - but said accusations that it was involved are "absurd".
Novichok death increases pressure on investigators
The death of Dawn Sturgess may not significantly change the mechanics of the Amesbury poisoning police investigation - but it will increase the pressure surrounding it.
About 100 detectives are already working round the clock to try to establish how Ms Sturgess and Charlie Rowley were contaminated by the nerve agent Novichok.
Swabs taken from them in hospital revealed the highest level of contamination on their hands, leading to the theory they picked something up.
It may well be that it was Ms Sturgess who came into first contact and Mr Rowley received secondary contamination from her, but that remains to be confirmed.