Today (4th March) marks two years since the Novichok poisoning incident in Salisbury, which saw the city at the centre of national and international media attention.

Prime Minister Boris Johnson paid tribute to the anniversary during PMQs on Wednesday morning.

He said: "It is now two years to the day that a chemical weapon was deployed by Russian military intelligence on the streets of Salisbury. All our thoughts remain with those affected, families and loved ones. We will continue to seek justice for them."

  • Watch: Boris Johnson pays tribute to Salisbury two years on

This time two years ago, former spy Sergei Skripal, 66, and his 33-year-old daughter Yulia collapsed on a bench near the Maltings in Salisbury.

They were taken to hospital for a suspected drug overdose, but it was soon established they would need to receive treatment for a nerve agent called Novichok.

It's believed the nerve agent had been applied to the door handle of Sergei's home on Christie Miller Road.

Sergei Skripal, 66, and his 33-year-old daughter Yulia

Wiltshire Detective Sergeant Nick Bailey was also thought to have come into contact with the poison when he searched their home, receiving treatment at Salisbury District Hospital.

In July 2018, Dawn Sturgess from Amesbury died after she and her partner, Charlie Rowley, had also been exposed to the nerve agent. Police believed that the 44-year-old and her partner Charlie, 45, handled a container which contained the deadly chemical.

Dawn Sturgess (right) from Amesbury died after she and her partner, Charlie Rowley (left) were exposed to the nerve agent

In his statement, the Prime Minister went on to say he was pleased that Salisbury was 'back on its feet, focused firmly on the future, and welcoming visitors with open arms'.

A year ago, Salisbury was declared decontaminated, after twelve sites in and around the city were treated.

  • Watch Richard Slee's report below with interviews from Rev Kelvin Inglis of St Thomas's Church, and Salisbury City Council Leader, Cllr Jeremy Nettle.