The Most Secure Locks for London Homes: Banham, Ingersoll, and Mul-T-Lock Compared
Banham vs Ingersoll vs Mul-T-Lock
Are you doing the standard debate: Banham vs Ingersoll vs Mul-T-Lock? When it comes to choosing the best brand lock, it’s a hard one if you do not know the basics about locks and security levels; In short, all come with advantages and disadvantages.
Read more about this in our blog post; maybe you’ll have a better image of these popular locks. Or you can call our experienced locksmiths, and they will explain it better.
Choose Wisely When It Comes To Your Home Security
If you are thinking about your home security in London, our locksmiths are prepared to assist you with the best locks and advice.
As you might know already, the strength of your door lock is really important. You can prevent property break-ins with the right lock professionally installed.
Moreover, these days, insurance requirements are more demanding; therefore, most homeowners try to choose the best lock when they install a new one.
Classic Question: Banham, Ingersoll, or Mul-T-Lock?
We have to admit, some of the most trusted names in the industry are Banham, Ingersoll, and Mul-T-Lock. Maybe there are a few more we would recommend, such as Ultion, another favourite of ours – but for the sake of the comparison, we’ll stick to the classic choices.
When it comes to these brands, we cannot think of anything else besides:
- durability
- precision
- peace of mind
- high security
- nice hardware
Of course, each of these high-security locks has its own strengths.
No matter if we are talking about Mul-T-Lock, Banham or Ingersoll – all three names offer solutions to different door types, different property styles and, most importantly, different lifestyles.
Here we will try to compare their key features and differences from our point of view. After years of experience and working with these locks daily, here is what makes them stand out for London homes.
Moreover, if you’re considering fitting one of these advanced locking systems with our locksmiths, you can also read about the process page on high-security locks in Kensington. Or you can simply call us and talk more about it direclty with our experts.
What Makes a Lock ‘High Security’?
Do you know what a high-security lock actually means? There are plenty of locks out there, but not all of them are highly secure.
Moreover, most of them are just basic locks that have no real features when it comes to security (especially the really cheap ones you can find on the internet). It is important to understand what the “high security” actually means. It is essential to know this aspect before we go deeper into the brands and models.
For starters, not every heavy lock or door latch is a high-security lock. A really good high-security lock has to pass tests and be certified to the British Standard. Also, it has to be built to resist a wide range of forced entry techniques.
Our locksmiths will offer more explanations about the way you can identify if a lock is secured when they get to your location. They also carry a wide range of locks with them and can show you the difference in person.
Understanding British Standard Mark (or BS 3621)
An important way to make sure your lock is highly secure is to spot the BS mark. For example, in the UK, BS 3621 is an important way to recognise secure door locks.
If your lock has a BS mark on it, it means that your lock passed the tests for resistance against drilling, picking, and tampering.
Another important aspect, many insurance companies require at least a BS3621 lock on the front doors if you wish to have a valid policy.
If you’re unsure about these standards and want to know more about your door locks and insurance requests, we’ll insurance-approved locks guide — it explains how compliance affects your home insurance coverage.
Key Features Of A High-Security Lock to Look For
A reliable high-security lock typically includes:
- Anti-snap
- Anti-pick
- Hardened steel components
- Anti-drill mechanisms
- Restricted key systems
- Reinforced bolts
- Precision internal engineering
- Certification from British Standards (or other similar certification)
Rest assured, all three brands we’re discussing will qualify as high security locks.
So, no matter if you choose Banham, Ingersoll, or Mul-T-Lock, your lock will exceed the mark.
Though they approach security from slightly different angles.
Banham Locks

History and Reputation
Banham is the most well-known brand for London home security. It is a London security icon. The brand was established in 1926 and has become a symbol in the city.
If you are looking for safety and craftsmanship, especially across Kensington, Chelsea, and other central boroughs, Banham is the answer.
Moreover, most of their locks are police-preferred (you can check the Secured by Design scheme).
Key Features
Banham locks are known for their distinctive keys and registered systems. Each customer receives a unique key registration. Therefore, duplicates can only be made with proof of ownership. This step is a simple but powerful deterrent to stop unauthorised copies, and many residents in Kensington, Chelsea, and Knightsbridge prefer to have the option.
Banham locks also meet BS3621 standards. Banham locks feature reinforced deadlocks and latches – for both front and back doors.
Read more about our fitting and servicing options on Banham lock installation page.
What Is Banham Best For
Banham is ideal for:
- Period London houses
- Elegance and strength
- Homeowners prioritising exclusivity
- Insurance compliance
Ingersoll Locks
10-Lever Mechanism
Ingersoll locks are another staple of home security in London and the definition of strength and British engineering. The original lock was developed in the mid-20th century; Ingersoll has a durable and complex 10-lever mechanism that set a new standard lock.
The design of this lock makes it really resistant to picking and manipulation. Therefore, this is one reason why they are a favourite of our locksmiths. It is not only us recommending these locks – property managers in London are always into these locks as the best option for design and great security.

Durable Insurance-Approved Locks
Ingersoll locks are built to last for a long time. Hence, our locksmiths have seen many models installed decades ago that are still in operation today in London.
These locks meet BS3621 certification. Also, they are insurance-approved, so you can be sure your policy will be valid with these locks installed on the front door. Call our locksmiths to discuss more about the design variations of these locks and fitting details.
Where To Install Ingersoll Locks
These locks are particularly well-suited for:
- Solid wooden door
- Heavy commercial doors
- Properties that need long-term locks
- Properties with no maintenance
- Traditional English houses across London’s older neighbourhoods
To read more about Ingersoll locks, you can visit our Ingersoll night latch page.
Mul-T-Lock

The Technology Behind Mul-T-Lock
When we are talking about Mul-T-Lock, we are talking about patented key systems and modern security.
These locks originate in Israel; Mul-T-Lock represents the next generation of high-security systems.
Their technology focuses on key control and modular design. More than that, these locks are difficult to pick or duplicate because of the security card (only authorised copies exist).
Benefits for Homes and Flats
Mul-T-Lock systems are especially useful in modern homes. Mostly, these are installed in apartment buildings and short-let properties, where several people may need access. These cylinders are also easy to replace in case you want a different key for your door.
You can see more about fitting options and compatible cylinders on our Mul-T-Lock installation in Kensington page.
Best For
- Modern homes and new builds
- Shared or rental properties
- Businesses that need key control systems
Comparison: Banham vs Ingersoll vs Mul-T-Lock
| Feature | Banham | Ingersoll | Mul-T-Lock |
|---|---|---|---|
| Certification | BS3621 | BS3621 | BS3621 |
| Key Control | Registered and traceable | Traditional | Patented, restricted |
| Design Type | Night latch / deadlock | Night latch | Euro cylinder |
| Ideal For | Period homes | Sturdy wooden doors | Modern flats and offices |
Each of these locks meets top-level standards; Banham is focused on exclusivity and design integration, Ingersoll has good mechanical strength, and Mul-T-Lock is focused on key control technology. All these are great options when you are looking for high-security locks.
How to Choose the Right Lock for Your Property
Consider Your Property Type
- Period homes: Banham locks good with their traditional design. It is a great option when it comes to design, and it also maintains insurance-level security.
- Solid wooden or commercial doors: Ingersoll’s 10-lever system is the best choice. Is it reliable and has a great strength.
- Modern homes or shared properties: Mul-T-Lock offers strength, flexibility and key management options.
Consider Insurance Requirements
Most insurers specifically require BS3621 or insurance-approved locks to validate a policy. Rest assured, any of these brands will make claims smoother in the event of a break-in. If you don’t know what to choose, ask a professional to assist you with the right lock and a professional fitting. Even the best locks can leave you exposed if installed incorrectly.
Final Thoughts: The Value of Certified Security
Security is about trust and certification. Moreover, the quality of installation matters a lot in this process. So, you can choose Banham for its elegance, Ingersoll for its robust mechanics, or Mul-T-Lock for its modern technology, but, most importantly, you have to choose a professional to help you with the installation process. All three lock brands represent the best options for home protection in London.
A certified high-security lock gives you more than peace of mind. For technical and compatibility questions, our 24/7 local locksmith in Kensington is here to help. We can provide tailored recommendations to keep your London home safe and secure. Book our services now!

