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Our Accreditations: Why Choose Three Counties?

Here at Three Counties we’re committed to providing our customers with industry leading products, dedicated, friendly and professional customer services, all combined with total value for money. As part of our commitment to ongoing customer support and service we are members of the following industry bodies:

Three Counties - Fensa Logo

FENSA Registered Company

FENSA stands for the Fenestration Self-Assessment Scheme. Following Government encouragement, FENSA has been set up by the Glass and Glazing Federation (GGF) and other industry bodies in response to Building Regulations for double glazing companies in England and Wales.

When replacing windows and doors, homeowners must comply with energy and thermal performance standards and ensure they get a certificate from FENSA or Local Authority Building Control to verify that their home improvements comply. FENSA enables companies that install replacement windows and doors to self-certify compliance under these Building Regulations without the need for a separate assessment from Building Control. Companies in the FENSA scheme, like us at Three Counties Ltd will provide you with a certificate confirming that their windows comply with the new regulations.

Choosing a FENSA registered supplier for your double glazing home improvements gives you peace of mind. As a FENSA registered member, here at Three Counties Ltd we have made a commitment to compliance with the new regulations and offer deposit protection insurance and insurance-backed guarantees.

Three Counties - GGF Logo


The Glass and Glazing Federation (GGF) represents companies who make, supply or fit, glass and glazing products in the UK and internationally.

Being the industry authority, the GGF promotes best practice and sets the highest technical and health & safety standards. The Federation is also the voice of the industry in local and national politics helping shape and influence policy and legislation.

As well as offering an array of benefits to its members, the GGF guides and protects homeowners when buying glass or glazing products and services.

Visit GGF Consumer Code of Practice for more information

Three Counties - Trading Standards Approved Logo

Surrey Trading Standards

Surrey Trading Standards puts consumers in touch with a list of approved local businesses which have given their commitment to trading fairly, providing high levels of customer service, including dealing promptly with any complaints and every business listed has undergone a series of thorough and detailed checks before being approved as eligible to become a member of the scheme.

Approved traders are vetted before they join and agree to:

  • Ensure that staff are properly trained for their work
  • Respond promptly and correctly to customer complaints
  • Get Criminal Records Bureau clearance for all staff who carry out work in people’s homes
Three Counties - Trustmark Logo

TrustMark Registered

Three Counties Ltd, Camberley are a TrustMark registered double glazing and triple glazing company ensuring we meet the highest professional installation standards. Our technical skills have been independently checked by a reputable organisation and our quality of work is constantly monitored to ensure complete customer satisfaction and total customer peace of mind.

TrustMark is a government backed organisation designed to help consumers find reputable and trustworthy tradesmen. This means, if you use a TrustMark registered double glazing company you can be confident of a professional installation. TrustMark is a not for profit organisation, licensed by Government and supported by consumer protection groups.

Three Counties - Checkatrade Rating Badge

Checkatrade Members

When you need to find a reputable local company to carry out home improvements to your Surrey home, finding reputable tradesmen can be difficult. How do you know whether they’re any good and can you trust them?

Chekatrade is a free service that gives you the background information you need to make a confident decision. They offer you a directory of trades and services who have been vetted to their high and completely independant standards, for example by verifying their insurance, qualifications and professional memberships. Not only that, but they also monitor the tradesmen’s work on an ongoing basis by collecting impartial feedback directly from their customers.

Here at Three Counties Ltd, we’ve been members of Checkatrade since 2010 and are proud to have an average customer feedback score of 9.8/10, so when it comes to choosing a quality local Surrey installer for your new or replacement double glazing, you don’t just have to take our word for it!