The questions, provided in full below, include a demand to clarify whether samples of the nerve agent ?-234 (also known as "Novichok") have ever been developed in the UK. The embassy's statement calls the incident that started the recent diplomatic row a "fabricated case against Russia."

1. Why has Russia been denied the right of consular access to the two Russian citizens, who came to harm on British territory?

2. What specific antidotes and in what form were the victims injected with? How did such antidotes come into the possession of British doctors at the scene of the incident?

3. On what grounds was France involved in technical cooperation in the investigation of the incident, in which Russian citizens were injured?

4. Did the UK notify the OPCW (Organization for the Prohibition of Chemical Weapons) of France's involvement in the investigation of the Salisbury incident?

5. What does France have to do with the incident, involving two Russian citizens in the UK?

6. What rules of UK procedural legislation allow for the involvement of a foreign state in an internal investigation?

7. What evidence was handed over to France to be studied and for the investigation to be conducted?