Best Mortise Locks of 2026

Name: Yale 5 Lever Mortice Deadlock for External Doors
Brand: Yale

Corey Phillips

Last Updated: 4 Feb 2026

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Mortise locks are a type of lock that is commonly used in residential and commercial buildings. These locks are designed to be fitted into a mortise, which is a hole that is cut into the edge of a door. They are known for their durability and strength, as well as their ability to provide a high level of security. Mortise locks typically have a keyhole on the outside and a thumbturn on the inside, which allows for easy locking and unlocking from both sides of the door. With a variety of styles and finishes available, mortise locks are a popular choice for those looking for a reliable and secure locking option.

At a Glance: Our Top Picks

#TOP 1

Yale 5 Lever Mortice Deadlock for External Doors

9.9

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#TOP 2

XFORT® 3 Lever Polished Chrome Mortice Sashlock

9.8

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#TOP 3

Yale 5 Lever Mortice Sashlock, High Security

9.6

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Top 10 Mortise Locks

#TOP 1 Best Brass Mortise Lock

Yale 5 Lever Mortice Deadlock for External Doors

Yale
655620105025
Brass Finish
2.5 Inch/64 mm

Yale British Standard 5 Lever Mortice Deadlock, High Security, Visi Pack, Suitable for External Doors, Brass Finish, 2.5 Inch/64 mm

The Yale Mortice Deadlock is an ideal choice for securing your external wooden doors. It meets the British Standard BS 3621:2007, ensuring maximum security for your home. This lock is also Secured by Design approved, giving you peace of mind. Additionally, it is recommended by insurance companies and the police, which can help you meet insurance requirements. With a stylish brass finish and a convenient 2.5 Inch/64mm backset, this deadlock not only enhances security but also complements your door's appearance.

9.9

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What We Like

High security approval
Insurance company recommended
Suitable for external doors
Stylish brass finish
Two keys supplied

#TOP 2 Best Mortise Lock with Key

XFORT® 3 Lever Polished Chrome Mortice Sashlock

XFORT
51.05.65
Polished Chrome
62mm

XFORT 3 Lever Polished Chrome Mortice Sashlock 65mm, Door Lock with Key for Internal Doors, CE Approved and Fire Rated Protection

The XFORT® Mortice Sashlock offers enhanced security with its solid brass latch and deadbolt, giving you peace of mind for your property. Its robust design is CE approved and has undergone EN1634-1 fire rate testing, ensuring safety in case of emergencies. The innovative ROTALATCH technology features a unique latch bolt reverse system, providing added convenience during operation. Additionally, this lock is versatile, suitable for both left and right-handed doors, making it ideal for various internal wooden door applications.

9.8

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What We Like

Enhanced security features
Fire rated for safety
Unique latch technology
Versatile for different doors
Elegant polished chrome finish

#TOP 3

Yale 5 Lever Mortice Sashlock, High Security

Yale
B-M550-PB-65
Brass Finish
2.5 Inch/64 mm

Yale 5 Lever Mortice Sashlock, High Security, Brass Finish, 2.5 Inch/64 mm

The Yale 5 Lever Sashlock is designed for wooden doors requiring enhanced security. With its high-security features, you can feel confident that your home is well protected. The mortice lock has a 2.5 Inch/64mm backset, making it suitable for various door types. You will receive two standard Yale keys, ensuring you have spares readily available. For added security on external doors, consider pairing this lock with a British Standard nightlatch.

9.6

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What We Like

High security for wooden doors
Brass finish for durability
Includes two standard keys
Compatible with nightlatch

#TOP 4 Best Chrome Mortise Lock

ERA Fortress 5 Lever Maximum Security Mortice Sashlock

ERA
262-61A
Grey

ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Sashlock - Chrome Effect

The ERA Fortress Mortice Sashlock offers exceptional security for your home. Certified to BS3621, it meets insurance requirements, giving you peace of mind. Its 20mm anti-saw deadbolt, made from laminated hardened steel, ensures that any attempts to saw through it will be thwarted. Additionally, the hardened steel case plates resist drill attacks, adding an extra layer of protection. With a pick-resistant mechanism, you can feel confident that your property is safe from unauthorised access. This lock is perfect for anyone seeking reliable security for their doors.

9.6

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What We Like

Insurance approved security
Resists saw and drill attacks
Pick resistant mechanism
Durable hardened steel construction

#TOP 5 Best Polished Mortise Lock

3 Lever Polished Chrome Mortice Sashlock by Infinity Decor

Infinity Decor
LAL1450NP
Polished Nickel
2.5" / 65mm

3 Lever Polished Chrome Mortice Sashlock 65mm, Door Lock with Key for Internal and External Doors, Reversible Catch, CE Approved and Fire Rated Protection - Infinity Decor®

The Infinity Decor Mortice Sashlock offers a robust solution for securing your internal and external doors. Made from high-quality iron, it ensures durability and long-lasting use. Its three-lever locking mechanism provides essential security, perfect for both homes and commercial properties. With fire-rated protection, this lock helps prevent the spread of fire for up to 30 minutes, enhancing safety. Additionally, the reversible catch allows for easy installation, making it user-friendly for anyone looking to upgrade their door security without professional help.

9.5

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What We Like

High-quality iron construction
Fire-rated for safety
Easy installation process
Reversible catch for convenience
Elegant polished finish

#TOP 6

Yale 5 Lever Mortice Sashlock for External Doors

Yale
P-M560-CH-67
Chrome Finish
2.5 Inch/64 mm

Yale P-M560-CH-67 5 Lever Mortice Sashlock, Boxed, Suitable for External Doors, Chrome Finish, 2.5 Inch/64 mm

The Yale Mortice Sashlock is an excellent choice for securing your exterior wooden doors. It meets the high standards of British Standard BS 3621:2007, ensuring maximum security for your home. This lock is also approved by the police and insurance companies, giving you peace of mind. With a stylish chrome finish and a 2.5 Inch/64mm backset, it not only looks good but also fits various door designs. Additionally, it comes with two standard Yale keys, making it easy for you to manage access to your property.

9.4

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What We Like

High security standards
Insurance approved
Stylish chrome finish
Two keys included

#TOP 7

Yale 2 Lever Mortice Lock in Chrome

Yale
650246085162
Chrome Finish
64 mm

Yale 2 Lever Mortice Basic Security, Polished Chrome, 2.5 Inch/64 mm

The Yale Mortice Lock is designed for internal wooden doors, making it a practical choice for your home. With its standard security level, you can feel confident that your doors are adequately protected. The lock features a polished chrome finish that not only looks stylish but also adds durability. Supplied with two standard Yale keys, you’ll have enough to share with family or housemates, and you can easily order additional keys from a locksmith if needed.

9.3

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What We Like

Stylish chrome finish
Standard security level
Suitable for internal doors
Includes two keys

#TOP 8

ERA 472-61 Chrome Effect Deadlock for Doors

ERA
472-61
Grey

Era 472-61 2.5-inch/ 64mm 3 Lever Deadlock - Chrome Effect

The ERA 472-61 Deadlock is a versatile locking solution ideal for your internal timber doors. With its key that withdraws the deadbolt from both sides, you will enjoy added convenience when entering or exiting. This lock is designed for both left and right-handed doors, ensuring compatibility with your existing setup. Importantly, it does not require any handles, making for a clean and simple installation that enhances the aesthetics of your doors.

9.1

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What We Like

Key access from both sides
Suitable for left or right doors
No handles needed
Perfect for internal doors
Designed for timber doors

#TOP 9

Sterling MLS330 Brass 3-Lever Sashlock

Sterling
MLS330
Brass
3.0"

Sterling MLS330 3-inch/76mm 3-Lever Sashlock - Brass

The Sterling MLS330 Sashlock offers a reliable 3-lever design, ensuring robust security for your doors. Its easy reversible latch allows you to change the handing without needing to open the lock case, making installation simpler. This sashlock is compatible with sprung furniture featuring an 8mm spindle, which means it can fit various door types. Additionally, it has a UK backset, ensuring it meets local standards for door fittings.

8.9

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What We Like

Easy reversible latch
Compatible with sprung furniture
Meets UK backset standards
Robust 3-lever security

#TOP 10

TSS Brass Mortice Sash Lock with 3 Keys

TSS
TSSBSMSL25B
Polished Brass

TSS British Standard Mortice Sash Lock 2.5" (68mm) Brass with 3 Keys and Fixings, Insurance Approved for External Doors, British Standard BS3621:2007

The TSS Mortice Sash Lock is a high-security solution for your external doors. It comes with three keys and easy-to-follow fitting instructions, ensuring a hassle-free installation. This lock is insurance approved and meets British Standard BS3621:2007, providing you with peace of mind. Additionally, it features hardened steel plates that protect against drilling attacks, enhancing your home’s security. With anti-saw rollers in the deadbolt, you can rest assured that your door is safeguarded against sawing attempts, making it an excellent choice for safety-conscious users.

8.9

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What We Like

Insurance approved for peace of mind
High-security anti-drill features
Easy installation with included instructions
Replacement for common external locks

Frequently Asked Questions (FAQs)

1. What is mortise lock?

A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket—the mortise—to be cut into the edge of the door or piece of furniture into which the lock is to be fitted.

2. When did they stop using mortise locks?

Two of the main differences between mortise locks and tubular locks are size and function. Additionally, each lock assembly type is made of up different parts to distinctly set them apart. Mortise locks were typically used before 1950, and tubular locks after 1950.

3. Is a mortise lock more secure than a deadbolt?

What makes mortise locks so much more secure than their cylinder counterparts? A pocket cut into the short edge of the door, allows a longer and thicker mortise box to slide into the door itself, providing superior protection.

4. What is the difference between a mortice lock and a deadlock?

The difference between a mortice deadlock and sash lock is that a mortice sashlock has a latch and bolt to open and close the lock. Where-as a mortice deadlock does not have a latch to open the lock.

Editor's Notes

During our mortise lock research, we found 179 mortise lock products and shortlisted 10 quality products. We collected and analyzed 25,853 customer reviews through our big data system to write the mortise locks list. We found that most customers choose mortise locks with an average price of £17.53.

The mortise locks are available for purchase. We have researched hundreds of brands and picked the top brands of mortise locks, including Yale, XFORT, ERA, Infinity Decor, Sterling.

Written by

Corey Phillips

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.