High security Nightlatches
July 23, 2025
High security auto deadlocking nightlatches
Ingersoll lock, high security nightlatch, high security lock
Just a bit of information on why you should have a high security lock.
So today we would like to discuss our favourite types of locks for wooden doors. This doesn't mean these are the guaranteed best for your specific door, however for most doors these are fantastic.
Why? Well the answer to that is fairly simple. Convenience - Security - Safety.
Now you may think, wait a minute, aren't safety and security the same thing? Well there is a slight difference. Security keeps you safe from outside intruders, safety is all round safety to tenants and families.
Now, lets start with describing the basics of all the British Standard High security night-latches. British standard locks provide what we call in the industry "insurance approved security". This means that if you have one of these on your door (and the homes security is up to standard) and anything happens the insurance company have got you covered. This is simply because these locks are very good.
Most basic night-latches we have seen are never double locked. this is not only because its inconvenient for whoever is leaving, but locks whoever is in the house, in the house. This means that the latch that closes the door behind you, despite not being able to unlock via the key hole if you don't have a key. If you know what you're doing it's simple to open it, if your finger can press the latch in when the door is open, and the latch is the only thing there, chances are you can be burgled very silently and easily.
Higher security night-latches offer security in the simple way that you cannot press the latch in. It either extends as a full bolt, or when the door shuts it extends and locks itself. This is the most obvious solution against slipping the lock and also means that you don't have to worry about locking it behind you. From the inside of the property they can be accessed without needing a key, this means should a fire ever break out in the house everyone can get out safely, perfect for buildings with 4 or more non related tenants. Under the Anti drill plate which we'll get to in a second sits a lovely Anti-Pick cylinder, try pick it and you will either be there for a very, very long time or you will give up, neither of which is convenient for a burglar. This is all done to add security to your lock and make you feel secure.
As mentioned earlier the really good ones come with an Anti Drill plate over the front of the cylinder. This leaves just a slight gap in which to place the key, it means accessing the cylinder by means of destructive entry is going to be very hard and require special tools. It also makes a lot of noise which means burglars are not likely to even try once they see the Anti drill plate.
Many of them even come with Controlled key systems. This means that if you don't have the special card with the details of how to cut your key, you won't be able to get it cut. Handy if you have builders going in or out, rent to different tenants, or simply want to ensure your business is safe.
This is one of the top questions people ask before calling a locksmith. Rekeying what it means Rekeying resets the lock’s internal mechanism, so only new keys work. It’s cheaper and fast. Good for: Lost keys (but lock itself is fine) Moving house (if the existing locks are in good condition) Replacing when it’s better Changing the whole lock is best when: Locks are old or damaged You want stronger security You’re upgrading to smarter or multi-point systems A locksmith will recommend the best option after inspecting your hardware.
People searching for a locksmith often worry about cost before they call. So let’s break it down clearly. Typical locksmith pricing Costs depend on: Whether it’s an emergency call-out The time of day Type of service (e.g., unlock, change lock, install new security lock) Parts required Example ballpark figures Emergency opening (no lock change): £60–£150 Lock change (cylinder replacement): £80–£200+ UPVC multi-point lock repair: £100–£250+ High-security lock fitting: £150–£350+ These are typical ranges a local locksmith will confirm before work starts. Tips to avoid surprises Ask for a firm quote before work Confirm whether VAT is included Check if emergency call-outs cost extra Request parts costs upfront SMS Locksmith gives transparent quotes up front , so you’re never left guessing.
