Yulia Skripal is “improving rapidly” and no longer in a critical condition, four weeks after the Salisbury poisoning, the hospital has said.
The daughter of ex-spy Sergei Skripal was admitted they came into contact with a nerve agent on 4 March.
“She has responded well to treatment but continues to receive expert clinical care 24 hours a day,” the hospital said.
Mr Skripal remains in a critical but stable condition.
