Lock & Key: A UK Online Shop for Locks, Replacement Keys and Home Security
There are certain household purchases nobody gets particularly excited about.
Light bulbs.
Drain cleaner.
Replacement door keys.
And yet, the moment you actually need one, it becomes the most important item on your shopping list.
That is where Lock & Key comes in.
Lock & Key is a British locksmith and security specialist selling door locks, replacement keys, cylinders, master-key systems and security hardware online, alongside professional locksmith services and technical advice. The company has been trading since 2013 and now supplies both domestic and commercial customers across the UK.
For anyone interested in practical UK online shopping, particularly when the shopping list contains words such as Euro cylinder, ABS key or master-key system, this is one UK online shop worth knowing about.
👉 Visit Lock & Key to browse locks, replacement keys, cylinders and security products.
What Is Lock & Key?
Lock & Key is an independent British locksmith and security business based at Security House in Aylesbury, Buckinghamshire.
The company says it began trading in 2013 and has since developed into one of the UK’s larger independent locksmith and security suppliers. Its current team includes full-time master locksmiths and qualified auto-lock specialists.
That is an important distinction.
This is not simply an ecommerce website listing boxes of locks from a warehouse.
The business works with the products it sells.
Its team cuts keys, identifies security hardware, designs master-key systems and provides professional locksmith support.
Which is useful because lock terminology can become technical remarkably quickly.
You may begin with:
“I need a new front-door lock.”
Twenty minutes later, you are reading about cylinder lengths, anti-snap ratings and restricted key profiles.
Welcome to home security.
What Does Lock & Key Sell?
The current Lock & Key store covers both domestic and professional security products.
Its principal areas include:
- Replacement key cutting
- Euro-profile cylinders
- High-security locks
- Door-security hardware
- Master-key systems
- Bullet and shutter locks
- Access-control products
- Specialist security keys
- Commercial key systems
The website also offers professional locksmith advice and key-decoding services where the customer is unsure which replacement key is required.
That makes the shop particularly interesting if you need something more specialised than the basic locks normally available from a general DIY retailer.
Replacement Keys Online
One of Lock & Key’s most distinctive services is online key cutting.
Instead of automatically travelling to a high-street key cutter, customers can order replacement keys online for numerous security systems.
Current options include keys for brands and systems such as:
- ABS Avocet
- Ultion
- Yale
- Mul-T-Lock
- Specialist master-key systems
among others.
How Does Online Key Cutting Work?
The exact process depends on the key.
Some security keys use a code printed on the security card supplied with the original lock.
For example, Lock & Key currently allows ABS Avocet customers to enter the relevant security-card code when ordering replacement keys.
Other key types may require:
- A photograph
- A control-card image
- A code
- Identification through the company’s decoding service
Lock & Key says it can also help identify unfamiliar keys through its key-decoding service.
That is a useful service when the extent of your technical knowledge is:
“It’s silver and goes in the front door.”
ABS Avocet Replacement Keys
ABS Avocet is one of the key systems featured prominently on the website.
Lock & Key describes ABS Avocet keys as high-security coded keys and currently supports several code prefixes, including WA, WB, WC, WD and WE.
Lost the Security Card?
That does not necessarily mean the process stops.
Lock & Key says customers who have lost the original security card can use its decoding service for assistance.
This is exactly the sort of specialist help that distinguishes a locksmith retailer from a general hardware shop.
Because security cards have an uncanny ability to disappear approximately six years before anybody needs them.
Yale Key Cutting
Lock & Key also offers replacement key services for selected Yale high-security systems, including Yale Platinum key profiles.
Some of these locks use codes from the security card supplied when the cylinder was purchased.
The advantage is that replacement keys can potentially be ordered without physically handing over an existing key.
Convenient.
Particularly when the existing key is currently being used by somebody who lives 200 miles away.
Door Cylinders
Another major product area is door cylinders.
These are the components into which your key is inserted on many modern uPVC, composite and aluminium doors.
Euro-profile cylinders are especially common in UK homes.
What Is a Euro Cylinder?
A Euro cylinder is a removable locking cylinder fitted into a compatible door-lock mechanism.
Different cylinders vary in:
- Length
- Security rating
- Key system
- Attack resistance
- Key-control features
And size matters.
A replacement cylinder needs to match the door and existing hardware correctly.
This is one category where:
“That looks about right.”
is not an ideal measuring system.
Anti-Snap Locks
Lock snapping has become an important consideration with certain Euro-cylinder installations.
Lock & Key has long published advice about anti-snap cylinders, including specialist ABS systems designed to resist common attack methods.
👉 Visit Lock & Key to browse locks, replacement keys, cylinders and security products.
What Is Lock Snapping?
Lock snapping involves attacking a vulnerable Euro cylinder so that the internal locking mechanism can be manipulated.
Higher-security cylinders may incorporate features specifically designed to resist or control this type of attack.
When comparing cylinders, look at the precise independent security standards and ratings attached to the individual product rather than relying solely on phrases such as:
“high security.”
Marketing adjectives are free.
Certification is more useful.
Security Standards and Professional Credentials
Lock & Key currently highlights its connection with the Master Locksmiths Association and says its operation includes MLA-approved locksmiths and BSI-certified key systems.
Why Does That Matter?
Security is one category where specialist knowledge matters.
Choosing the wrong lock can mean:
- Poor fit
- Reduced security
- Installation problems
- Incorrect key compatibility
Professional credentials do not automatically mean every product suits every property, but they do provide useful reassurance that the business has genuine locksmith expertise behind the website.
Master-Key Systems
Lock & Key also works far beyond ordinary household locks.
The company designs and supplies master-key systems for commercial and organisational customers.
These can be used in environments such as:
- Hotels
- Schools
- Offices
- Housing providers
- Commercial sites
What Is a Master-Key System?
A master-key system allows different keys to open different combinations of doors.
For example:
An employee’s key might open one office.
A department manager’s key might open several rooms.
A master key might open the entire building.
This allows access to be controlled without giving everybody one universal key.
Lock & Key says its systems are planned, pinned and documented in-house.
That is considerably more sophisticated than simply ordering twenty identical padlocks.
Commercial Security Experience
The company’s published project history includes substantial commercial security work.
Its archive describes previous projects involving a 6,000-cylinder master-key system and specialist high-security padlocks supplied for Gatwick and Heathrow airports.
Those are historical company-published case studies rather than independent endorsements, but they provide useful context about the technical end of the business.
This is clearly not a company whose entire experience consists of replacing the lock on somebody’s garden shed.
Door Hardware and Other Security Products
Lock & Key also describes its range as covering locks, cylinders, keys and door hardware.
Depending on your project, related hardware can matter just as much as the cylinder itself.
Security depends on the whole door arrangement.
A very strong lock attached to weak surrounding hardware is not necessarily the comprehensive upgrade it first appears.
If unsure, ask for advice rather than simply buying whichever part has the most impressive security terminology.
Lock & Key Review: Our Impressions from Research
Here comes the important disclaimer.
This isn’t a hands-on Lock & Key review.
We haven’t personally ordered keys or locks for this article, and we haven’t had one of the company’s locksmiths visit a property.
So we are not going to pretend we can provide first-hand experience.
What we can assess is:
- Company background
- Product breadth
- Specialist services
- Customer reviews
- Delivery
- Returns
- Professional credentials
And several things stand out.
The Technical Expertise Appears Genuine
The strongest point is that Lock & Key is not merely an online reseller.
The business has operated since 2013, has physical workshop facilities and employs specialist locksmith staff.
That matters when customers need help identifying obscure locks or keys.
Online Key Cutting Is Particularly Convenient
Being able to order certain security keys by code, card details or other identification methods is a genuinely useful feature.
It could save a journey while also providing access to key types that an ordinary local cutting machine may not support.
The Range Covers Homes and Businesses
You can move from ordering one replacement domestic key to discussing an enterprise master-key system.
That breadth is unusual.
What Do Lock & Key Customers Say?
Independent feedback is particularly substantial.
At the time of research, Lock & Key’s Trustpilot profile contained more than 19,000 reviews. Recent July 2026 reviews include customers praising successful online key cutting, website usability, delivery and correctly matched locks.
Several recent reviewers specifically described sending key information or photographs online and receiving working replacement keys shortly afterwards.
Naturally, not every review is perfect, and individual experiences vary.
When researching the company yourself, read both positive and negative recent comments rather than relying only on the headline score.
👉 Visit Lock & Key to browse locks, replacement keys, cylinders and security products.
Lock & Key Delivery
Lock & Key currently applies a default £4.80 delivery charge, with optional delivery upgrades available at checkout.
Keys cut to code and general key orders are usually dispatched the same day, although the company asks customers to allow up to two working days for processing.
Current shipping methods include Royal Mail Tracked 48 and DHL tracked options. Lock & Key says it prioritises DHL key orders where that service is selected.
Same-Day Dispatch
The current homepage also promotes same-day dispatch from UK stock across relevant product lines.
That can be particularly valuable with security products.
If you need a replacement key because only one copy remains, waiting three weeks is not ideal.
Lock & Key Returns
Lock & Key currently requires eligible returns to reach the company within 28 days from the day after delivery.
Correctly supplied unwanted goods can generally be refunded for the product cost, although delivery charges are not refunded.
Faulty or damaged goods are treated differently.
Custom Security Products Are Different
This is very important.
Products customised specifically for the customer — including:
- Keys cut to order
- Keyed-alike locks
- Master-key systems
are generally non-refundable unless faulty.
That is entirely logical.
A key cut specifically for your lock has limited usefulness to somebody else.
So check every code and specification before ordering.
How to Order the Right Lock Online
Buying a lock through a UK online shop requires a little more preparation than buying ordinary household goods.
Measure the Existing Cylinder
If replacing a Euro cylinder, determine the correct internal and external lengths.
Identify the Lock Brand
Check for markings on:
- The key
- Cylinder
- Lock faceplate
- Security card
Photograph Everything
If uncertain, take clear photographs before contacting the retailer.
Lock & Key specifically invites customers to provide photos and product markings when asking for advice.
Ask Before Guessing
This is probably the most important point.
A five-minute conversation with someone who understands locks can save you ordering the wrong £80 security cylinder.
Specialist advice exists.
Use it.
Who Might Find Lock & Key Useful?
Lock & Key could be particularly relevant if you’re:
- Looking for replacement keys online
- Buying high-security door locks
- Replacing a Euro cylinder
- Shopping for anti-snap locks
- Looking for ABS Avocet keys
- Ordering Yale replacement keys
- Searching for master-key systems
- Managing commercial premises
- Looking for professional locksmith advice
- Searching for a specialist UK online security shop
It is especially valuable when the product is too technical to feel comfortable buying from a completely generic marketplace.
Lock & Key and the Practical Side of UK Online Shopping
Not all UK online shopping needs to involve exciting new clothes, gifts or furniture.
Sometimes the internet is at its most useful when it makes an awkward practical job easier.
Lock & Key lets customers research locks, identify parts and order certain replacement security keys without automatically visiting a shop in person.
That is exactly the sort of specialist ecommerce the internet does particularly well.
You have a problem.
The retailer knows the problem.
And nobody attempts to sell you a scented candle while you’re solving it.
Is Lock & Key Worth a Look?
Based on our research, yes — particularly if you need specialist replacement keys, security cylinders or advice from an established UK locksmith business.
We can’t give Lock & Key a personal five-star review without placing an order ourselves.
But several factors are reassuring.
The business has traded since 2013.
It employs full-time master locksmiths and auto-lock specialists.
It provides online key cutting for numerous high-security systems.
Its Trustpilot profile currently contains more than 19,000 reviews.
And the company operates from a physical security centre in Aylesbury rather than existing only as an anonymous ecommerce storefront.
For a specialist UK online shop for locks and keys, that is plenty of reason to investigate.
Ready to Explore Lock & Key?
Perhaps you need another front-door key before the only surviving copy disappears.
Maybe you’re replacing an old Euro cylinder.
Perhaps you have moved house and decided the locks deserve upgrading.
Or maybe somebody at work has uttered the phrase:
“We really need a proper master-key system.”
In which case your afternoon has changed considerably.
👉 Visit Lock & Key to browse locks, replacement keys, cylinders and security products.
Check your measurements.
Find the product markings.
Ask for advice if you need it.
And try not to lose the new key.
That part remains entirely your responsibility.