Yulia Skripal, a tainted daughter of Russian ex-spy Sergei, has been liberated from hospital.
The 33-year-old left Salisbury District Hospital on Monday and has been taken to a secure location.
The sanatorium said: “This is not a finish of her diagnosis though outlines a poignant milestone.”
Her 66-year-old father stays in sanatorium and is “recovering some-more solemnly than Yulia”.
The span were taken to sanatorium on 4 Mar after being unprotected to a poisonous haughtiness representative Novichok.
The father and daughter were found slumped on a park dais in a centre of Salisbury.
Wiltshire Police Det Sgt Nick Bailey, who attended a scene, was also treated in sanatorium after being unprotected to a haughtiness agent, though has given been discharged.
A matter from Ms Skripal expelled by a Metropolitan Police final week pronounced her “strength is flourishing daily”.
Mr Skripal stays during Salisbury District Hospital though is no longer in a vicious condition.
Medical executive Dr Christine Blanshard said: “Although he’s recuperating some-more solemnly than Yulia we wish he too will be means to leave sanatorium in due course.”
The UK supervision says Russia was behind a poisoning, and Prime Minister Theresa May pronounced Moscow was “culpable” for attack.
But a Russian supervision denied any impasse and has indicted a British of inventing a “fake story”.
Police pronounced a span initial came into hit with a haughtiness representative during their home.
The BBC’s health and scholarship match James Gallagher pronounced Novichok prevents enzymes called acetylcholinesterase from functioning routinely during haughtiness junctions, including those compulsory to keep a heart beating.
He said: “But over time, a haughtiness representative is metabolised and excreted by a physique and new acetylcholinesterase is made.
“The doubt is either doctors can keep patients alive prolonged adequate for that to happen.”
BBC confidence match Gordon Corera pronounced a top thoroughness was found on a Skripals’ front doorway handle.
Traces of Novichok were also found during a Mill and Zizzi in Salisbury, where a Skripals spent a afternoon.
Investigators identified 131 people who had potentially been in hit with a haughtiness agent, and adult to 500 people who visited a pub or a grill were told to rinse their garments and possessions.
Analysis: Will Russia get entrance to Yulia Skripal?
By BBC Security Correspondent Frank Gardner
Unseen by a public, Yulia Skripal was discreetly liberated from sanatorium in Salisbury final night, hours forward of this morning’s announcement.
She is accepted to have been taken to a secure plcae somewhere in Britain while discussions take place over her destiny reserve and protection.
For a UK supervision this could infer to be a ethereal tactful problem. She is a Russian citizen and Moscow has been dire for consular access.
But it is by no means transparent where she will wish to settle given her slight shun from genocide in this unsuccessful assassination try on her and her father, Sergei.
Whitehall officials contend reports that a Skripals are to be given a new temperament in a US are premature.
Samples of a haughtiness representative have been tested by a Defence Chemical Biological Radiological and Nuclear Centre during Porton Down in Wiltshire, in an try to determine a source.
Its conduct pronounced a accurate source of a haughtiness representative had not been verified, though it was expected to have been deployed by a “state actor”.
A tactful predicament between Russia and a West has followed, with some-more than 20 countries expelling Russian envoys in oneness with a UK.
Russia’s ask for a new, corner review was voted down during a general chemical weapons watchdog during The Hague on 4 April.
Mr Skripal is a late troops comprehension officer who was convicted of flitting a identities of Russian comprehension agents operative clandestine in Europe to a UK’s Secret Intelligence Service, MI6.
He was jailed for 13 years by Russia in 2006, though was expelled in 2010 as partial of an sell for 10 Russian spies arrested by a FBI.
Ms Skripal frequently trafficked from a UK and Moscow, and had returned from Russia a day before a span were poisoned.
Yulia’s cousin, Viktoria Skripal, has been refused a UK visa to revisit her relatives.
The Home Office pronounced a focus did not approve with immigration rules, though a supervision told a BBC it appears Russia is “trying to use Viktoria as a pawn”.
Viktoria after told a BBC she did not have adequate income in her bank comment to prove a visa requirements.