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    Security Doors

    Security doors are specially designed to provide enhanced protection for your home or business. Given their strength, these doors are customisable and can match any architectural style, making them suitable for both residential and commercial properties. Our security doors provide a crucial layer of safety without compromising on aesthetic appeal. They can fit seamlessly with any project, offering both security and great looks. They are a key component in creating a secure environment, combining durability and style to keep you safe.

    Our Doors for Security

    At Knight’s Mark, our security doors are designed for strength and safety. They’re rigorously tested to withstand heavy forces and resist common burglary tools, these doors feature triple-glazed, laminated, and toughened glass for enhanced security. Using advanced software, each door can be fully customisable with various hardware options to meet both security and aesthetic preferences.

    security doors

    High Quality Standard

    At Knight’s Mark, quality is ensured through rigorous construction processes and the use of premium materials. Our security doors are crafted from galvanised steel and can be cladded in wood, veneer or offer a metal finish for aesthetic appeal. Advanced features like multi-directional locking systems, high-grade insulation, and reinforced frames provide top-notch security, noise reduction, and thermal efficiency. Each door undergoes strict testing to meet high safety standards, ensuring durability and reliability for both residential and commercial properties.

    ROBUST, DURABLE FRONT DOORS FOR
    A TOTALLY SECURE HOME

    SECURITY DOORS

    Our security doors are crafted to offer unmatched strength and bespoke design, tailored to fit any size or style. Built with a robust metal core and optional triple-glazed units, they provide superior protection against break-in tools while enhancing insulation and noise reduction.

    SPECIALIST TEAM

    Our specialist team is here to collaborate with you, helping you choose the perfect door that complements your home’s unique style and security needs. With expert knowledge in both design and security features, we make the entire process seamless, from consultation to installation, ensuring you’re informed and confident every step of the way.

    SMART INVESTMENT

    Choosing Knights Mark means investing in more than just a door—it’s a statement that enhances your home’s beauty while providing unmatched security. Our bespoke doors offer superior protection, durability, and energy efficiency, making them a smart long-term investment that increases property value while reducing future costs.

    Recent security doors projects

    Our portfolio includes a variety of bespoke security door installations, ranging from traditional to modern designs. Explore our gallery of recent projects to see the wide array of options we offer.

    WHY CHOOSE SECURITY DOORS FROM KNIGHT'S MARK?

    Choosing security doors from Knight’s Mark means investing in superior protection and elegant design. Our doors are crafted with robust materials and incorporate the latest in security technology, ensuring they meet the highest standards of safety and efficiency. Each door is custom-designed to blend seamlessly with your property’s aesthetic while providing the ultimate barrier against potential threats. With Knight’s Mark, you not only secure your premises but also enhance its appeal, making these doors a smart choice for discerning homeowners and businesses.

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    Testimonials, Customer Feedback

    Here’s what our customers have to say about their experience with our security doors – from initial consultation to manufacturing to installation.

    Knight's Mark - Security Doors London place picture
    Knight's Mark - Security Doors London
    4.9
    Based on 44 reviews
    review us on
    Nicola Dennis profile picture
    Nicola Dennis
    4 months ago
    Knights mark came recommended to us by a friend.. we went to their showroom and nothing was too much trouble. They had a variety of choices and recommendations for our requirements. The quality is top notch and everyone in the office was a pleasure to deal with. Also the door fitter Rambo a gentleman and gave us top tips and installed the door perfectly! We wouldn’t hesitate in recommending this great local east London security door company!
    Dragan Zadro profile picture
    Dragan Zadro
    6 months ago
    After month and half searching for the best supplier of our new security door, we decided to come back to the first option, Knight's Mark. Simply because they left strongest impression to us with presentstion of their doors, also talking with them our confidence in them grows every time after we visited them. Mainly because they did not trying to impress us with promises or flushing images. Also they give us time to think and to decide. Finally we ordered new door, waiting time was shorter then we were told it going to be, installers arrived on arranged date and time , and they was really ptofesional. The best thing was door it self, looking stylish, strong, making us feel safe. All in all, we are very satisfied, having value for our money. Dragan and Billie.
    Jae Gadar profile picture
    Jae Gadar
    6 months ago
    We came across Knights Mark by accident as we were initially looking for a company that was more recognized in the industry. We assumed we would simply get a better service if we went to a established company with thousands of 5 star reviews. However, when we met Mantas, Dainius, and Viktoria, we realized that this company will be our best option. From the very first consultation to the last fitting, we found the team to be extremely knowledgeable. They helped guide us through the minefield of options, and helped us make the best decisions. Nothing was impossible with them. They have such a positive and professional attitude. It is rare for me to leave a review. But i feel that Knights Mark deserve this as they were excellent. I would highly recommend this company to anyone looking for high quality security doors and crittall doors. they are of high quality with competitive prices.
    Ozlem Ozdemir profile picture
    Ozlem Ozdemir
    12 months ago
    I wanted to thank you and the whole team for the seamless process from start to finish. First of all, doors are amazing, exactly what I wanted. The whole process has been extremely professional and everything was meticulously planned by your team. There were no surprises and drama. Fantastic!
    Barbara Tartamella profile picture
    Barbara Tartamella
    1 year ago
    I cannot praise this company enough. The doors are exceptional, and the team is incredibly kind and trustworthy. Danius came to my house countless times and delivered a bespoke project to absolute perfection. I would definitely buy from them again and truly recommend them without hesitation.
    Julia Sav profile picture
    Julia Sav
    2 years ago
    Knight's Mark recently installed new doors and windows. From initial consultation to final installation, the team were professional and friendly. Along with unbeatable prices, they offer quality products. The installation was completed on time and the team left everything in order. Very pleased with the results
    Crystal P profile picture
    Crystal P
    3 years ago
    Absolutely fantastic service from start to finish! Mantas and team were wonderful to deal with in every sense and most professional. The doors are of superior high quality and look fantastic.
    Paul Mcdonnell profile picture
    Paul Mcdonnell
    3 years ago
    Great customer service and after ordering double glazed sash windows they were installed on time and could not be happier with the quality of them and the workmanship. The cost was very reasonable and I would highly recommend this company for products and great service. Many thanks to all staff.
    Liz Miranda profile picture
    Liz Miranda
    3 years ago
    I am very pleased with the French doors and two kitchen windows which Knight’s Mark supplied and fitted for me. The quality is excellent: robust, easy to use and maintain, and very stylish. Communication and delivery were prompt, careful, efficient and pleasant. Thank you!
    Marc Alex Taylor profile picture
    Marc Alex Taylor
    3 years ago
    I cannot praise Knightsmark highly enough. From start to finish they were excellent. Mantas and his team spoke to us at great length, spending time to understand what we wanted and offering suggestions which we really appreciated. We then received detailed plans and had a site visit. After having the door on order we were kept up to date regularly and were supplied with a photo of our door in production. The fitting team were proficient and friendly, making sure we were happy prior to signing off. Given we are renovating, they managed to still make it look like a really professional finish, better than expected. We easily have the best house on the street. Thank you Knightsmark!
    Antonio Birsa profile picture
    Antonio Birsa
    3 years ago
    Being a general contractor, we often deal with various doors and windows suppliers. 4 years ago we were lucky enough to collaborate with Knight's Mark on a project. Since then we have appointed them on almost every project. Their quality is second to none and their quotes are transparent and highly competitive. I can't praise them highly enough with Mantas and Dan going above and beyond to ensure that every aspect and minor details are explained and followed by their factory to ensure the highest standard of finishing quality for their products.
    Mark Mace profile picture
    Mark Mace
    3 years ago
    Excellent product and service. We bought a new front door. Time from order to delivery was exactly as promised. Quality of the product is superb - far superior to all the others we looked at. Also very impressed with the standard of workmanship of the Installation team. Old door taken out and new door installed with virtually no damage to the surrounding area whatsoever. Highly recommended.
    Beatrice Turtenwaldova profile picture
    Beatrice Turtenwaldova
    4 years ago
    Just had my new door installed and I could not be happier. It's beautiful. The service provided by Knight's Mark security door was great. I was contacted a day before the estimated lead time and the door was installed the following week. The fitters were polite, quick and left the house clean. Thank you!!

    Take the first step and contact us

    Interested in high quality security doors? Reach out to us for a consultation and a free quote. We’re here to help you take the first step.








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      FAQs about security doors

      What is a security entrance door?

      A security entrance door is specifically engineered to provide a higher level of protection than a conventional entrance door. At the heart of every Knight’s Mark security door is a welded metal-profile structure and metal frame, concealed beneath a bespoke timber finish. This combines the strength and security of metal construction with the appearance and character of a beautifully finished entrance door.

      How do security doors work?

      These doors feature complex locking systems, robust materials, and welded steel sheets to resist forced entry, including tests against hammers, chisels, crowbars, and hand drills. They also offer additional safety features like smart locks and reinforced frames.

      What security features are available?

      Depending on your chosen specification, our security doors can incorporate multipoint locking systems, security chains, high-security cylinders and electronic access control. We work with established security hardware manufacturers including ISEO (including FIAM locking systems), Mottura and EVVA, with options such as EVVA 4KS high-security cylinders, multipoint locking systems and electronic access control P4B and P6B laminated security glazing can also be specified where required. Our team will help you select the most appropriate combination of security features for your property and individual requirements.

      What colour security doors can I order?

      You can choose from a broad spectrum of colours and finishes to perfectly match your home’s exterior and interior design, with customisation options available to meet your specific needs.

      What doors are burglar-proof?

      Our doors are tested against extreme forces and tools, with options available for bullet-proof and blast-proof specifications.

      What is the average price of a security door?

      Prices vary based on customisation, materials, and security features, tailored to fit a range of budgets and security needs. Please contact us for a free estimate of security doors for your project.

      Are security doors safe?

      All our doors meet rigorous safety and durability standards, providing peace of mind with top-tier security features.

      Can you manufacture security doors for safe rooms and panic rooms?

      Yes. We can manufacture bespoke security doors for safe rooms, panic rooms and other areas requiring an enhanced level of protection. Each door can be designed and specified around the individual requirements of the property, with suitable locking systems, security hardware and access-control options available.

      Other Services

      Security doors

      Security Doors

      See More

      Unique structure security door consisting of metal profiles and sheets brings out all the difference. Made from steel and dressed in wood (waterproof EDM, UMIDAX, Wood Veneer) with three directional armoured locks – high spec premium security doors. Any style, shape or colour – every single security door is bespoke!

      Wooden Windows

      Wooden Windows

      See More

      Wooden sash windows, casement windows, French doors or fixed windows – all top quality that comes in a broad range, double or triple glazed. Any style, size or colour to match all budgetary needs. We can also supply Heritage windows for a Listed Building or a Conservation Area.

      Aluminium Windows

      Aluminium Windows

      See More

      Knight’s Mark aluminium windows can be manufactured in various shapes, styles and adjusted to different architectural styles. Bi Fold doors or sliding doors, casement windows or fixed windows – any RAL colours, anodized colours or even wood imitations. We can offer standard or slimline frame aluminium.

      Professional Installation

      Installation

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      Professional and friendly installation service is available to carry out doors or windows replacement, because your product is only as good as the installer that has done the job. Our fitters are trained to the highest standard, has over 10 years of experience and are CERTASS certified.

      2026 © Knightsmark Ltd. Reg No 11730702.