Which?, Checkatrade and Fensa



You’ve seen the names many times before, but what can these three organisations do for you?



Which? Trusted Traders is an endorsement scheme that recognizes reputable traders who successfully pass our rigorous assessment process. Not just anyone can become endorsed. The assessment process involves:
– Credit Check
– References
– Business Procedures
– Interview and Assessment
– Code of Conduct
– Endorsed Trader

They’re not afraid to fail those who do not make the grade. Due to the high demands of the assessment, not all businesses that apply get through the assessment process. Only those who meet our high standards are credited with Which? Trusted trader status.
An extra benefit of using Which? Trusted Traders is that we have Dispute Resolution Ombudsman on hand to offer extra peace of mind. Dispute Resolution Ombudsman provides independent dispute resolution to all Which? Trusted trader customers.

Which? exists to make individuals as powerful as the organisations they have to deal with in their daily lives.



Checkatrade is a free website that compares tradespeople across the UK. Their members give out a feedback card with each and every job, and they put the reviews online for all to see. They’ve published approx. 2.7 million reviews to date. The company started back in 1998 with the aim to rid the UK of rogue traders and cowboys, and so far they are doing a grand job.

Members must agree to the following both being accepted by Checkatrade:

        • Be honest in all dealings with you
        • Tell you about any call-out fees before coming to you
        • Let you know straight away if they can’t do the work
        • Keep appointments and arrive on time (calling in advance if they need to reschedule)
        • Be realistic about when they can start work and how long it will take
        • Be courteous. Treat you, your property and belongings with respect
        • Keep you in the picture about all aspects of the work
        • Return phone messages promptly
        • Create an additional contract for variations from the original agreement
        • Deal with complaints promptly and professionally
        • Never demand cash payment
        • Never be verbally or physically abusive or threatening to a customer in any way
        • Not obtain work through cold calling

This way you are able to get a well-rounded view on the companies you are thinking about using, from people who have already had work completed by them.



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, doors and roof lights in dwellings in England and Wales, homeowners must comply with current thermal performance and Building Regulation standards and ensure they get a certificate from a Competent Person scheme such as FENSA or Local Authority Building Control. 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.

FENSA obtains funds to supports its certification operations through a combination of membership fees and inspection fees. FENSA does not aim to accumulate or distribute any surpluses, but set its charges at levels appropriate to finance the continuing operation and expansion of its certification product, and to provide prudent reserves against contingencies.


An independent report commissioned by the Government found FENSA to be the most successful of all competent person schemes to date in the UK, across all industries. FENSA is the brand trusted by consumers, Local Authorities, industry and Government.

FENSA is the industry standard for replacement window and door installers self-certifying compliance with the building regulations.

Here is why you should look for the FENSA logo when having replacement windows and doors fitted in your property:

Saves time and cost:

          • You do not have to register your window or door installation with the local authority yourself. Not only is the FENSA approach much faster and easier – it is likely to save you hundreds of pounds
          • Compliance with the Building Regulations without the added cost and time of arranging assessment by Building Control
          • If you own properties across different local authorities – for consistency of quality and price, you are able to use the same FENSA installer for all installations, as they can work in all Local Authority jurisdictions

FENSA Building Regulations Certificate:

          • This will be sent by FENSA directly to you to demonstrate compliance, important in the event you need to sell your house.

These three organisations can protect you from rogue traders, cowboy fitters and make sure standards are legally up to scratch. When looking and comparing different companies, make sure you are dealing with companies that are part of these three organisations.




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