Americans in the UK have been warned to keep a low profile during this weeks visit of their president, Donald Trump, as the US embassy in London says demonstrations against the event could turn violent.
On Tuesday, officials said the demonstrations would probably be focused on the centre of the UK capital, despite the fact that Trump is spending only a short time there, but added others had also been planned over the three days from Wednesday.
Be aware of your surroundings [and] exercise caution if unexpectedly in the vicinity of large gatherings that may become violent, the US embassy warned.
The warning comes after it emerged that the UK police mobilisation for Trumps visit would be the largest since the 2011 English riots.
Officers will be moved around the country to protect the US president, with those in regions Trump is not visiting giving assistance to the services in those he is. Its scale is such that some police chiefs have expressed concerns they will not have enough resources for their usual local policing duties.
With the hot weather, if anything kicks off, we are struggling. They cut the officers in the urban areas [biggest forces] and now they need them, one told the Guardian on Monday. Firearms officers, armed counter-terrorism units, public order officers and dog handlers are all part of the deployment.
In their warning on Tuesday, the embassy told American citizens to expect the largest demonstration in central London on Friday 13 July, when organisers hope tens of thousands of people will be on the streets. A Trump baby balloon is also due to fly over central London that morning.