There are a many number of locks currently on the market which come in a variety of prices and security levels.
Euro Cylinder Locks
– Euro cylinders are used primarily for residential security. They are often fitted to the front and back entrances residential properties. Euro cylinders use a pin tumbler system which relies on pins locking in place to open the lock.
Many euro cylinders used on doors are vulnerable to lock snapping, picking and drilling, that’s why we always recommend installing high security locks such as a 3 star ABS lock. The ABS lock features 16 anti-drill pins, snap secure technology, anti-pick trap pins as well as a magnetic lock. All of these features is why the ABS is approved by the Police and insurance companies too.

Rim locks – Rim cylinder locks are usually used in conjunction with another type of locks usually a deadlock on the front door of residential homes. Rims locks are similar to euro locks however on the inside is a piece of metal which extendeds through the door onto a night latch on the other side of the door.
Dead locks – a Dead lock or deadbolt typically utilises a fixed bolting system which can only be altered with the full rotation of the lock mechanism on the inside of the door, this differs from euro cylinders which are based on a spring bolt system. Deadbolts are typically more secure then euro cylinders and are also usually better protected from forceful attacks.
Electronic locks – Electronic locks have traditionally been used in commercial buildings. Keypad locks, fobs and card systems have been used by businesses to ensure only authorised personnel can entre certain areas of the buildings. These systems also make it easier to rekey as instead of rekeying you just need to reprogram the system which is usually quite straightforward with modern electronic systems.
Smart locks – Smart locks are incedingly becoming popular, however these locks do have several drawbacks. The first drawback would be the price, the cheapest on the market is around £130, compare this to a normal lock of £20-£30 and you can see the difference.
The second major problem with this type of lock is that many smart locks work based on a signal from your phone which communicates and unlocks the door when your close, now if you lose your phone you will be unable to access your home, and as the lock will have to be drilled out as traditional lock picking or lock bypassing techniques are no longer feasible, the lock will need to be drilled our and replaced increasing costs further. And finally, the third major problem with this is the vulnerability to hacking. Now few people have the technical skills to carry out such an attack but the number of people with this type of knowledge is steadily growing.
Padlocks/Shutter locks – Padlocks along with shackle locks are the only type of locks which are not directly attached to the object itself. Padlocks and Shutter locks come in many sizes and security levels. Some of which are waterproof some of which cannot be cut without great effort and time. Some padlocks have a built in siren which will activate if someone is trying to tamper with it. Other padlocks have hidden screws making them extremely difficult to break open. Like with all locks the higher the price you pay the more secure the lock.
Types of Locks on Doors
UPVC Doors

Euro Cylinders
Smart Locks

Wooden Doors
Rim Locks
Deadlocks
Smart Locks
Composite doors
Euro cylinders
Thumb turn Cylinders
Smart Locks
Aluminium Door Locks
Screw in Rim Cylinders
Oval Cylinders
Euro Cylinders

Of course, if you are changing your locks or need a repair to your door to keep your home or business premises secure, you should get the help of a professional so that the job is done to an expert standard. You can serch onlie for someone local to you by searching for a term like professional locksmith in London for best results.