This type of lock is basically the key-operated part of a large, multi-point locking system that protects the length of the door with a number of bolts, hooks, rollers, and pins.
A good UPVC door is a great security item, but is often let down by the weakness of the euro cylinder. If a criminal can defeat the euro cylinder by picking, drilling, or snapping (the easiest method) then they can completely unlock your door, no matter how many bolts, pins and gadgets are holding it shut.
The locks in the picture at the top are very basic ones and contain little - if any - protection against even the most basic attacks. This would still however be a common style of lock to be found in UPVC doors around Sutton Coldfield. Below these locks you will see a picture of a Sold-Secure Diamond Standard anti-snap lock installed in a door - this is the real elevel of protection that serious threats demand.
Tip: Make sure that your multi-point locking system is in good condition too. Some doors are in a poor state of repair or are not even locked properly by their owners, therefore there is no benefit at all provided by all the additional locking points.
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