Thames Valley Police says it wants to "help reduce the fear of knives" and knife crime.Read more
Hampshire Constabulary has teamed up with a group of teenagers to produce a rap about the dangers of knife crime.
Knife bins are being installed at four Warwickshire Police stations as part of a nationwide crackdown on knife crime.
There were 272 knife-related incidents in the county in the 12 months to March this year as knife crime rose 8% across England and Wales.
West Midlands Police has used a convicted murderer to front its latest anti-knife campaign.
Murderer Sadam Essakhil wants people to avoid the mistakes that led him to stab.
The 21-year-old says he moved away from Newcastle after seeing people his own age getting involved in knife crime.
BBC News, London
Every 75 minutes, someone in London is admitted to hospital with traumatic injuries, according to the capital's ambulance service.
In a week-long diary for the BBC, the London Trauma System's clinical director Professor Karim Brohi describes the moment he held a stabbed man's heart in his hands and how rising knife crime is "taking its toll" on the healthcare system.