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DGCOS has the backing of the peoples' consumer champion, Nick Ross. It protects consumers against cowboy operators. The former BBC Crimewatch and Watchdog presenter is the ambassador of the Ombudsman Scheme, which provides comprehensive protection for homeowners installing windows, doors, conservatories, orangeries and associated products by its members.
DGCOS is 'the' Ombudsman Scheme for the UK double glazing industry – a powerful organisation that offers unparalleled consumer protection.
DGCOS helps you make the right choice in using reputable installers that trade ethically, use ethical sales practices, deliver quality workmanship and offer excellent value for money.
All registered installers provide protection of deposits, work in progress insurance and guarantees to protect you should the installer cease to trade.
And in the event of a dispute or complaint concerning one of our members, DGCOS is here to provide a legally binding and enforceable solution.
By choosing a DGCOS member you are less likely to run into problems at a later stage. But if you do, we're here to help – and all our advice is free.
DGCOS is here to ensure the installer honours its promises and guarantees, and does a professional job from start to finish.
Each DGCOS accredited installer has been vetted to ensure they offer excellent customer service, value for money and quality workmanship.
Becoming a DGCOS accredited installer isn't easy. Those that do get accepted must agree to an ongoing programme of assessment to ensure they continue to meet our exacting standards and deliver customer satisfaction.
Unlike Trade Associations, DGCOS is here to protect you.
All our advice and services are completely free of charge to consumers.
So if you want to be sure of choosing the right installer for the job, make sure you use a member of DGCOS.
DGCOS protects you at every stage of the process. When you place your order with a DGCOS member you will qualify for:
DGCOS is the ONLY scheme to give you this advanced level of protection and confidence
The Double Glazing & Conservatory Ombudsman Scheme (DGCOS) is here to protect you, before, during and after you buy, but only when you use a DGCOS Accredited Installer.

Windows: Our A+ 4 Casement window is one of the highest rated windows money can buy & will actually add heat back into your home.
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Doors: A full range of durable PVCu, Profile 22 finishes and shapes to suit your home, modern or period in style.
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Conservatories: Conservatories are one of the most popular home improvements of recent years and it's easy to see why.
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Inverness Glass Company Ltd. Longman Drive, Inverness IV1 1SU
Reg. in Scotland, company no. 33089 VAT reg. no. 266 2634 49