Surrey Police say people will see more high visibility patrols at key locations in the county following last night's terrorist attack in London.
They've released a statement asking members of the public to be vigilant:
“Many of us became aware of the news as it broke last night of the terror attacks in London.
“As details emerge about what happened, through this Met Police-led investigation, our thoughts are with victims and all of those involved, including those who bravely responded.
“People will see enhanced high visibility patrols at key locations across Surrey and Sussex as we continue to keep all policing under review to ensure the most appropriate security is in place to keep our communities safe.
“Policing in the UK continues to operate at a heightened state against the backdrop of a ‘severe’ threat level, which has been in place since 2014, and means that an attack is highly likely. This threat level applies to the whole of the UK and not any specific area.
“It is important for the public to work with us and remain vigilant as we tackle the on-going terrorist threat.
“Please report any suspicious activity using the anti-terrorist hotline number 0800 789 321 or 999 in an emergency.
"This is a time for us all to work closely together and unite against those who seek, through violence and extremism, to intimidate or cause fear."
A minute's silence and messages of condolence as the south reacts to last night's events
London Bridge station remains closed following Saturday night's terrorist attack. Rail companies have issued travel advice for passengers