16:36

Theresa May and other senior ministers have been briefed about the investigation at a meeting of the government’s national security council, Downing Street has said.

May’s spokesman said the PM and her ministers “were updated on the ongoing investigation in Salisbury, which is now being led by counter-terrorism police. The council followed a meeting of senior government officials from across Whitehall earlier today”.

May was among people who spoke at the meeting, the spokesman said: “A number of people spoke, including the prime minister and officials.”

Beyond that, we didn’t learn much, with May’s spokesman declining to say who attended, beyond May and the foreign secretary, Boris Johnson, or what was discussed. He said: