A British man who was poisoned with the Novichok nerve agent over a week ago is no longer in a critical condition France based news agency AFP reported on Wednesday.
"Charlie Rowley has made further progress overnight. He is no longer in a critical condition," Lorna Wilkinson, director of nursing at Salisbury District Hospital, said in a statement.
However, his condition is still serious but stable.
"Charlie still has some way to go to recover but the progress we've seen so far gives us cause for optimism," Lorna added in the statement.
Forty-five-year-old, Charlie Rowley regained consciousness yesterday. He was admitted to the Salisbury hospital after he was found unconscious in his home in Wiltshire along with his partner Dawn Sturgess who died on Sunday.
Charlie Rowley and Dawn Sturgess were poisoned by the same nerve agent used in the attack on former Russian spy Sergei Skripal and his daughter in March.
.The major incident sparked a bitter diplomatic crisis between Moscow and London, which says a Soviet-made nerve agent dubbed Novichok was used on the pair.
Britain and its allies have blamed Moscow for trying to kill the pair, prompting angry denials. The Kremlin termed the accusations "absurd".
Novichok was developed by the Soviet military during the Cold War.
Police are now working to establish whether the Britons are also exposed to the same poison used in the attack on the Skripals and the UK couple.
The investigation of the matter is now being carried out by counter-terrorism police and Reports say that at least 100 detectives are currently working on the case.