Boris Johnson has warned Moscow not to underestimate Britain’s outrage over the use of nerve agent on UK soil, as he failed to rule out launching cyber attacks against Moscow.

The Foreign Secretary welcomed international support after France, Germany and US Secretary of State Rex Tillerson all gave their backing to the UK following the Government’s confirmation it was “highly likely” Russia was behind the use of deadly Novichok in Salisbury.

Russian foreign minister Sergei Lavrov insisted on Tuesday morning that the country was not to blame and asked for access to samples of the poison that have left Sergei Skripal and his daughter Yulia in hospital.