SUSSEX Police officers have shown solidarity with their colleagues and other emergency services in the capital following Saturday night’s terror attack.

All policing remains under review in Sussex to ensure appropriate security levels are met after the atrocity.

Following the rapid police response which saw officers shoot and kill the three attackers within eight minutes of being called to the scene, Sussex Police said they will be introducing more “high visibility patrols”.

Assistant Chief Constable Steve Barry, head of Operations Command, said: “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 the counties as we continue to keep all policing under review across Surrey and Sussex 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 ongoing 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.”

Police investigating the London Bridge attack which left seven people dead and dozens more injured have now arrested 12 people.

After previous reports by The Telegraph and from witnesses that arrests of up to 7 people occurred in East Ham, the Metropolitan Police has now confirmed no arrests were made during raids there, although a number of people were taken to be spoken to.

Scotland Yard said the investigation into the “horrific attack” at London Bridge and Borough Market was progressing rapidly with officers searching several addresses in the area.

The arrests in connection with the attacks came as Prime Minister Theresa May warned that Britain is in the grip of a spate of copycat terror plots and it emerged that an off-duty Metropolitan Police officer was among the 48 people injured by the terrorists.

For the third time in a matter of weeks, counter-terrorism police units and security services have launched a huge investigation as they piece together the circumstances of the latest strike and its perpetrators.

Scotland Yard head Cressida Dick said: “We have a very large investigation ongoing and we will be seeking to establish whether anyone else was working with or assisting in any way, or helping in the planning of this attack in the way that you would expect.”

The Met Police commissioner declined to give any details about the identities of the attackers at this stage.

“Obviously a very high priority for us is to identify them, work out who they are, where they’ve came from, what is behind this,” she added.

The official terror threat level in the UK is currently at severe, the second highest category, and Ms Dick said authorities are already at a “very high level of alertness”.

Although police have “very good” resources and “extraordinarily highly-trained people” attacks are difficult to predict, the police chief added.

A British Transport Police officer who was stabbed in the face during the incident took on the knifemen armed only with his baton, the force said.

Nigel Goodband, chairman of the British Transport Police Federation, said he and all colleagues were extremely proud of the severely injured officer, who is in hospital.