Charge To Open A Standard Night-Latch (Non Emergency)

It is very important that you have a secure home. Should you suspect that your current euro cylinders are outdated and vulnerable to attack, you should seriously consider replacing these locks with high security, 3 Star cylinders. The euro cylinder can be the most vulnerable part of your door. By using techniques that we will not discuss here, a burglar may be able to gain access in less than 60 seconds, if you have an antiquated or ill fitting cylinder. The BSI kitemark is a certification mark that represents safety and quality and is trusted and respected throughout the world. In the UK a growing number of insurance companies now insist that any euro  lock fitted to an external door must have a British Standard Kitemark

These locks were popular in the 90's for timber doors hinged on the left or the right.  They can be very expensive to replace.