British Prime Minister Theresa May said she was appalled and shocked by Sturgess's death and the interior minister, Sajid Javid, said the "desperately sad news only strengthens our resolve to find out exactly what has happened".
London's Metropolitan Police Department identified the woman as 44-year-old Dawn Sturgess of Durrington.
In March, Britain and its allies accused Russian Federation of trying to kill the Skripals, prompting angry denials and sparking an global diplomatic crisis.
March 26: European Union countries and others including Canada show solidarity with the U.K.by expelling Russian diplomats.
Home Secretary Sajid Javid said the area is open for business and urged people to visit what he called one of the most handsome parts of the country.
Mother-of-three Dawn Sturgess, 44, fell ill on Sunday after she was exposed to "a large dose" of the substance. She became ill alongside a man named locally as Charlie Rowley, 45.
He told the Commons: "The simple reality is that Russian Federation has committed an attack on British soil which has seen the death of a British citizen".
A police officer stands at a cordon around a public litter bin next to a supported housing project in Salisbury after a major incident was declared when a man and woman were exposed to the Novichok nerve agent on July 5, 2018 in Salisbury, England.
Sturgess and Rowley were hospitalized on June 30.
The two Britons were initially thought to have taken an overdose of heroin or crack cocaine.
Tests later confirmed that they had been exposed to the Novichok nerve agent.
Celtics fan is remembered at funeral just as he lived
During his remembrance on Sunday, the family had Matthews preserved and placed in stance that reflected his low-key lifestyle. Not only was he representing his favorite team, but he was also "playing" NBA2K on his Xbox One.
On March 20, experts from the Organisation for the Prohibition of Chemical Weapons (OPCW) take samples.
He said no one else in the area has shown any sign of Novichok poisoning.
The British government has called a meeting of its COBRA emergencies committee for 1:00pm (1200 GMT).
A police officer was hospitalised out of fear that he might be showing symptoms of poisoning, but that, too, was a false alarm, and he was released.
Britain has blamed Moscow for the attack on the Skripals.
Sergei Skripal is discharged from hospital on May 18. The hospital's medical director, Dr. Christine Blanshard, said the staff "worked tirelessly to save Dawn". "They did everything they could", she said.
While Russia made a point past year of destroying its last remaining stockpiles of publicly declared chemical weapons, Reuters noted that it is "not believed to have ever declared Novichok or its ingredients to the Hague-based Organisation for the Prohibition of Chemical Weapons (OPCW)".
"Police and security officials are working urgently to establish the facts of this incident, which is now being investigated as a murder", she added.
The Met urged anyone who may have information that could assist with this investigation and would urge anyone to help to contact police by calling 0800 789 321.
He said the "main line of inquiry" was a connection between the Skripal poisoning and this case but said scientists had not been able to determine whether the nerve agent came from the same batch.