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• You must be over 18 years of age to legally purchase a knife from my site.
• You may carry a fixed blade knife having a blade length greater than 3 inches (75mm), if the knife is for use in your work or pastime, e.g. hunting. 
• However you would be well advised not to carry such a knife when you pop into the supermarket on your way back from hunting, the Police will take an extremely dim view of this.
• Take your knife off & lock it in the glove box!
• You are allowed to carry in a Public place a non locking knife having a blade less than 3 inches long.
• Switchblades, flick knives, gravity knives, butterfly knives are all illegal in the UK.
• The law concerning these is quite complex & relates mainly to the sale of such knives please check this out for yourself if you have any doubts as to the legallity of any knives in your posession.
• Knives are small pieces of desirable engineering please keep & use them for the purpose they were intended for. The very word "Knife" is emotive in todays society, by keeping & using your knife properly you will help to preserve the rights of all law abiding genuine knife owners & users.

The above is a very brief run down of the legal position with regard to knives in the UK for more information please do your own research, all the information is available on the internet.

All other countries please research your own laws.