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The Heritage Window Company


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0800 731 4294

  • Windows into existing frame
  • Old world charm
  • Windows into existing frame
  • Windows into existing frame
  • Windows into existing frame
  • Windows direct to brick/stone
  • Windows direct to brick/stone
  • Period glazing bar detail
  • Windows direct to brick/stone
  • Windows direct to brick/stone
  • Windows vertically sliding
  • Windows vertically sliding
  • Doors
  • Doors
  • Doors
  • Bi-fold Doors
  • Bi-folding doors
  • Bi-folding doors

The Heritage Window Company Profile

The Heritage Window Company is based in London and specialises in the design, fabrication and installation of replacement windows using innovative aluminium double glazing. The replacement window systems have been developed to retain the original and unique look of crittall steel windows on existing properties and are also specified for bespoke new-build projects.

The Heritage Window Company is a family-run business and is the preferred choice of architects and discerning homeowners. The Benenden range offers all the benefits of modern double glazing without having to compromise on the character, integrity and character of a traditional property. The company has over 35 years of industry experience and is committed to providing a bespoke service for every individual client and property.


The Heritage Window Company has over 35 years of industry experience and is committed to providing a bespoke service for every individual client and property. There are showrooms located in Dorking, Sevenoaks, Beaconsfield and London. Key services include:

  • Quotations: Following an enquiry a member of the sales team will arrange a visit to the property and a detailed quotation will be provided. The customer is given time to make their decision without any pressurised sales tactics.
  • Full Service: A complete service including survey and full installation using the team of experienced and skilled fitters.
  • Assisted Fit: This service provides an optional survey, delivery on-site by one of the company's craftsmen and assistance with technical advice and installation.
  • Supply Only: Following an optional survey, the products can be delivered or collected by the client for self-installation.
  • Installation: The craftsmen will remove existing windows, replace any damaged or worn cills and timbers, install the new windows and leave the site clean and tidy inside and out.


The Heritage Window Company has developed the unique Beneden window which is the slimmest aluminium double glazed window available. The Beneden window replicates the look of original steel windows whilst offering all the modern benefits of double glazing. The Beneden system can be installed directly into stone or brick for an almost maintenance-free option and maximum glass area for the aperture size; in addition to this, the system can also be fitted into new or existing timber frames for a truly authentic look. The aluminium windows are finished with a powder-coating in a wide range of single or dual RAL colours.

Often normal industry metal window frames are too big to fit into original timber frames without damaging them. The Beneden crittall window has been developed with advanced technology to provide environmental benefits and is an energy-saving solution to original steel windows.

Beneden Series 1

The Beneden Series 1 is completely unique and there is no other product available to rival it. This super slimline system is perfect for replacing crittall windows and is supplied with cockspur key locking handles in a wide range of designs. The windows can be finished in any RAL colour and can have a different colour internally and externally.

Beneden Series 2

The Beneden Series 2 metal window system has been developed for use in properties where security is paramount. This designer window offers the same features as the Beneden 1, but incorporates multipoint shootbolt locking. The Beneden Series 2 comes with a range of period detail handles such as monkey tail handles.


The Heritage Window Company has created a range of slimline doors which are robust, durable and look authentic. The superior design and manufacturing techniques facilitate the subtle combination of slimline windows with hinged, sliding or folding door systems. The doors are available for replacement or new-build projects and can be fitted directly or with timber surrounds. The doors are extremely secure and incorporate a reverse throw, hook bolt system which prevents the door leaves from being removed. When used with 5-lever cylinder locks and optional mortise locks, the doors provide innovative security. The company specialises in superior quality European oak, Iroko and sapele which ideally complements the Beneden range. The timber is finished with a basecoat protection or 3-coat factory finish and micro-porous paint.

Aluminium Bi-Folding Doors

Bi-folding doors are an extremely popular choice nowadays as they can transform a room, opening it out into the garden, balcony, patio or decked area. Origin is the UK’s leading provider of bi-folding doors and The Heritage Window Company has been supplying and installing these systems for over seven years. The company recommends the Easifold 3000 range of bi-fold doors as it offers the very best combination of elegance, innovation, engineering, security and price. Key features and benefits of the system include:

  • Thermal Efficiency: Superior thermal efficiency due to advanced thermal breaks and weathertight seals.
  • Security: Extra security due to a unique 8-point locking mechanism which conforms to the police preferred "Secured by Design" standards. Chamfered 20mm linear bolts and deep throw 25mm security hooks, solid cast Yale security handles, Magnum security cylinder, security hinges and a stainless steel faceplate provide additional security benefits.
  • Low/Level Threshold: Low or level threshold designs which enable equal floor levels inside and out.
  • Unique Free Glide System: Each door section features a long wheelbase solid aluminium carriage with four wheels that run along the threshold base track.
  • Safety: The Easifold door system comes with a bespoke finger safe gasket between each door leaf to prevent little fingers from being trapped. The lead door has a magnetic stay to prevent it from slamming.
  • Colours: A full range of RAL colours are available


The standard range of handles comes in white, black, silver, gold or pewter finishes and the Heritage Window Company can provide authentic reproductions of original handles to complement the slimline windows. This range includes handles made from brass, handles with antique bronze or nickel chrome finishes and monkey tail handles in black or pewter. Bespoke colour finishes are available for orders of over 50 handles.


The aluminium windows can be fitted with beautiful leaded designs in 6, 9 or 12mm widths. Georgian bar designs are available in single or cross designs. The glazing is available with ultra-high technology glass such as solar control, sound reduction and self-cleaning glass.

The Heritage Window Company is fully committed to providing clients with a high quality window and door system which retains the unique look of original steel windows. The dedicated team welcomes enquiries and can provide a bespoke solution for any renovation or new-build project. The website features a gallery of completed projects and the company has featured on Channel 4's Grand Designs programme. The company has established a highly respected reputation for producing accurate recreations of period metal windows and has a passionate commitment to service and quality.

You might also be interested in local companies in London.


Unit 23
Bellingham Trading Estate
Franthorne Way
Greater London

Tel: 0800 731 4294

Other Branches

Surrey Showroom - Dorking


1 West Street


01306 880 404

Kent Showroom - Sevenoaks


145 High Street
TN13 1XJ


01732 461 919

Bucks Showroom - Beaconsfield


15 Gregories Road


01494 730 400

What We Do