Yulia Skripal, the poisoned daughter of Russian ex-spy Sergei, has been discharged from hospital.
The 33-year-old left Salisbury District Hospital on Monday and has been taken to a secure location.
The hospital said: “This is not the end of her treatment but marks a significant milestone.”
Her 66-year-old father remains in hospital and is “recovering more slowly than Yulia”.
The pair were taken to hospital on 4 March after being exposed to the toxic nerve agent Novichok.
The father and daughter were found slumped on a park bench in the centre of Salisbury.
Wiltshire Police Det Sgt Nick Bailey, who attended the scene, was also treated in hospital after being exposed to the nerve agent, but has since been discharged.
A statement from Ms Skripal released through the Metropolitan Police last week said her “strength is growing daily”.
Mr Skripal remains at Salisbury District Hospital but is no longer in a critical condition.
Medical director Dr Christine Blanshard said: “Although he’s recovering more slowly than Yulia we hope he too will be able to leave hospital in due course.”
The UK government says Russia was behind the poisoning, and Prime Minister Theresa May said Moscow was “culpable” for attack.
But the Russian government denied any involvement and has accused the British of inventing a “fake story”.
Police said the pair first came into contact with the nerve agent at their home.
The BBC’s health and science correspondent James Gallagher said Novichok prevents enzymes called acetylcholinesterase from functioning normally at nerve junctions, including those required to keep the heart beating.
He said: “But over time, the nerve agent is metabolised and excreted by the body and new acetylcholinesterase is made.
“The question is whether doctors can keep patients alive long enough for that to happen.”
BBC security correspondent Gordon Corera said the highest concentration was found on the Skripals’ front door handle.
Traces of Novichok were also found at the Mill and Zizzi in Salisbury, where the Skripals spent the afternoon.
Investigators identified 131 people who had potentially been in contact with the nerve agent, and up to 500 people who visited the pub or the restaurant were told to wash their clothes and possessions.
Analysis: Will Russia get access to Yulia Skripal?
By BBC Security Correspondent Frank Gardner
Unseen by the public, Yulia Skripal was discreetly discharged from hospital in Salisbury last night, hours ahead of this morning’s announcement.
She is understood to have been taken to a secure location somewhere in Britain while discussions take place over her future safety and protection.
For the UK government this could prove to be a delicate diplomatic problem. She is a Russian citizen and Moscow has been pressing for consular access.
But it is by no means clear where she will want to settle given her narrow escape from death in this failed assassination attempt on her and her father, Sergei.
Whitehall officials say reports that the Skripals are to be given a new identity in the US are premature.
Samples of the nerve agent have been tested by the Defence Chemical Biological Radiological and Nuclear Centre at Porton Down in Wiltshire, in an attempt to verify its source.
Its head said the precise source of the nerve agent had not been verified, but it was likely to have been deployed by a “state actor”.
A diplomatic crisis between Russia and the West has followed, with more than 20 countries expelling Russian envoys in solidarity with the UK.
Russia’s request for a new, joint investigation was voted down at the international chemical weapons watchdog at The Hague on 4 April.
Mr Skripal is a retired military intelligence officer who was convicted of passing the identities of Russian intelligence agents working undercover in Europe to the UK’s Secret Intelligence Service, MI6.
He was jailed for 13 years by Russia in 2006, but was released in 2010 as part of an exchange for 10 Russian spies arrested by the FBI.
Ms Skripal regularly travelled from the UK and Moscow, and had returned from Russia the day before the pair were poisoned.
Yulia’s cousin, Viktoria Skripal, has been refused a UK visa to visit her relatives.
The Home Office said the application did not comply with immigration rules, but a government told the BBC it appears Russia is “trying to use Viktoria as a pawn”.
Viktoria later told the BBC she did not have enough money in her bank account to satisfy the visa requirements.
Source: BBC
