Under the Prevention of Crime Act 1953, it is an offence to carry an offensive weapon on or about the person whilst in a public place.
In the United Kingdom, "any article made or adapted for use for causing injury to the person, or intended by the person having it with him for such use" is defined as an offensive weapon under the Prevention of Crime Act 1953 thus potentially including a yawara stick.
Act of Parliament | Act | CSI: Crime Scene Investigation | 1953 | Statute Law Revision Act 1948 | Statute Law Revision Act 1888 | Centers for Disease Control and Prevention | Act of Congress | crime | war crime | Reform Act 1832 | Patient Protection and Affordable Care Act | Endangered Species Act | 1953 in television | Society for the Prevention of Cruelty to Animals | Digital Millennium Copyright Act | Clean Water Act | American Recovery and Reinvestment Act of 2009 | National School Lunch Act | Statute Law Revision Act 1863 | Police and Crime Commissioner | Criminal Justice Act 1988 | Local Government Act 1972 | Americans with Disabilities Act of 1990 | Racketeer Influenced and Corrupt Organizations Act | Crime | Communications Act 2003 | Statute Law Revision Act 1887 | Crime Story | Consumer Credit Act 1974 |