The United Kingdom government wanted to set up an internal warning system to monitor and react to decisions made by President Donald Trump, emails show.
According to the BBC news, the emails reveal concerns about the impact of President Trump’s travel ban on UK citizens and national security.
One official said, officials did not want to be caught out by similar orders issued by the US president “just as London is going to sleep”,.
The emails were released to the BBC under the Freedom of Information Act.
The BBC’s Diplomatic Correspondent James Landale said: “These emails show just how concerned the Foreign Office was about the flow of unexpected announcements emerging from the Trump White House and the potential impact on the UK.”