A drive to try to increase awareness of security and counter terrorism policing in London was being launched today.
Operation Griffin, launched by the Metropolitan Police Service, City of London Police and British Transport Police, runs until June 15.
The project, which is now in its tenth year, aims to advise managers, security officers and workers on counter-terrorism and crime prevention issues.
Briefings and events will be held across London at venues ranging from local shop owners in Sutton, to a large scale briefing with the business community at The Shard.
Commander Simon Bray, from Specialist Operations, said: "Everyone has a role to play in keeping London safe from terrorism. This operation sees specialist officers working closely with neighbourhood officers and communities raising awareness of security in London.
"The threat to London from terrorism remains real and serious, so we encourage the public to remain vigilant and alert and to report anything suspicious to police."