11:56

There will be a UN security council meeting on Thursday for the UK to update other nations on the latest Salisbury investigations, Theresa May’s spokesman told the afternoon lobby briefing. May has also discussed the developments with the Canadian prime minister, Justin Trudeau, he said.

In other diplomatic moves, the Russian charges d’affaires in London – diplomatic-speak for the deputy ambassador – has been summoned to the Foreign Office to, as the spokesman said, “account for the actions of the GRU”.

It was the charges d’affaires called in as the ambassador is not currently in the UK, we were told.