The Crime Prevention Website


There are literally hundreds of different types of door locks and latches, but this section only deals with the most common types.  Like all the other advice given on this website you will be encouraged always to use locks that are certificated to security standards.  They do cost more, but you’ll get what you pay for.  Whilst the majority of the locks can be DIY fitted some do require a little know how, so if you are at all unsure use the services of a locksmith, preferably one who is a member of the Master Locksmiths Association

Fire safety!

All the way through this chapter are references to your fire safety and means of escape.  Please heed the advice.  As with all locks on doors make sure you know where the keys are in case you need to get out in an emergency.  And make sure your smoke detectors are working. 

Restricted keys

The majority of keys we use in our locks at home can be copied down at the local heel bar or locksmith. If you want to prevent that from happening you can instead purchase locks and cylinders, which use restricted keys.  These are keys for which the key blanks have a restricted level of distribution, so that the heel bars can’t cut them.  Contact your local Master Locksmith about upgrading your locks so you can use restricted keys.  Restricted keys can only be cut by authorised locksmiths against a letter of authority and or proof of identification or both and many of them include special features that prevent their duplication at the heel bar.  You can also ask your locksmith to install locks that are ‘keyed alike’ so that you only need one key to open both an outer and inner entrance door to your home.