Westminster's top cop is leading a crackdown on so-called 'honour crimes' with the launch of a strategy to protect people at risk of becoming victims of violence.
Met Police Commander Steve Allen, said all UK police forces should enhance their witness protection schemes, offer new identities to victims and be aware of the life-threatening nature of honour disputes.
In the first national policing plan covering the issue, he also called on community leaders to break the code of silence which governs honour violence and forced weddings among some ethnic communities.
Each year 12 people are killed across the UK to avenge a perceived slight against family, religious, community or tribal honour.
Campaigners believe this is the tip of the iceberg, with many more people taken abroad to be killed or forced into marriage away from the protection of British law.
The police have faced criticism in the past for not treating the issue seriously and being cautious of causing friction with London's ethnic communities.
Victims' families say there has been an institutional tendency to see honour crime as a community problem, playing into the hands of those who want to hush-up wrong-doing.
Moving to assure the public the force will do all it can to protect victims and punish perpetrators Commander Allen said: "To the best of our knowledge, 12 people are murdered every year for someone else's perverted notions of honour.
"We don't know how many people commit suicide as an alternative or an escape. But the police response has nothing to do with political correctness and nothing to do with inappropriate sensitivities."
He added: "We do everything in our power, working alongside our communities to keep people safe and end these abuses."
Publishing the Association of Chief Police Officers 'Honour-Based Violence' strategy, Commander Allen said 500 men and women report their fears of being forced into marriage, violence, rape and false imprisonment to the police.
Sixty-five per cent of reported cases involved Pakistani-origin families, but gruesome cases from the Kurdish, Turkish and Punjabi Sikh communities have come to light over recent years.
Last year the London Informer ran a series of articles on the trial of a 70-year-old grandmother and her son for the 1998 murder of Surjit Athwal.
The killers, who were jailed for life by the Old Bailey, lured the Heathrow Airport worker to Punjab where she was murdered.
The case intensified calls for a co-ordinated strategy to protect honour victims.
Next month judges will gain new powers to protect people from being forced into marriage. They will be able to seize passports, ban travel and arrest people suspected of coercing a bride or groom into marriage.