Launching the initiative with London's new mayor, Sadiq Khan, Metropolitan Police chief Bernard Hogan-Howe said "you need firearms officers who will use force to stop those attackers. After terrorist attacks in France and Germany in the last month, the UK is also on high alert.
The country has not had a major terror attack since , but reports suggest it remains a target. Khan told reporters that while Britain's "severe" threat level remained unchanged, "in light of recent deadly attacks in Europe it is important we are prepared should the unthinkable happen," he said ahead of the initial police deployment on Thursday. Early on Thursday morning, the BBC reported that one person had died and five more had been injured in a knife attack in London's Russell Square.
The assailant was reported to have been tasered and arrested. Police said they were considering terrorism as one possible motive. At the same time, France is bolstering security on land and at sea and on has started airdropping armed, military officers from a helicopter onto ferries crossing the English Channel.
The missions only involve French ferries sailing in French waters until an agreement under discussion with British authorities is signed. Such an agreement would allow French military officers to board ferries directly from English ports, he said. Ferries also travel from French continental ports to the Mediterranean island of Corsica and to North African countries such as Algeria and Tunisia.
France's Interior Minister Bernard Cazeneuve said 12, reservists have joined police to support extra security measures. The 10,strong Sentinel Operation of extra personnel will continue to patrol French streets and sensitive sites such as airports and train stations.
