KJM tops Which? Google and Checkatrade with near‑perfect scores

KJM tops Which? Google and Checkatrade with near‑perfect scores

Some companies claim they have great customer service and as much as we try we do sometimes get things wrong, we are after all human. However from award recognition to 700+ public reviews, KJM’s no‑pressure approach, a company ethos of service and tidy installations keep customers coming back. We’re proud to share that KJM is consistently rated at the very top of the three places homeowners trust most for independent feedback:

Customer service – why do people choose KJM?

“Excellent workmanship, clean and tidy and friendly

• Which? Trusted Traders: 4.9/5 from 83 reviews, with 100% of customers recommending us. Sub‑scores: Customer Service 4.9, Quality 5.0, Value 4.9. trustedtraders.which.co.uk
• Google: 4.9/5 from 259 reviews
• Checkatrade: 9.87/10 across 367 reviews; Member since 2008. Last 12 months’ reviews score Quality 9.83, Reliability 9.92, Communication 9.90. checkatrade.com

Customers highlight the things we care about most: no pushy sales, clear communication, excellent workmanship, and clean, tidy installations. One recent Which? review called our service “outstanding and professional,” and another mentioned our no‑quibble support six years into a 10‑year warranty.

“Service was outstanding and professional.”

Last year, Which? named KJM its Trusted Trader of the Month (February 2024)—independent recognition of the standards we work to every day.

“No pushy sales”

If you’re planning new windows, doors or a conservatory upgrade, talk to us. You’ll get straight advice, no in‑home hard sell, and installation teams who respect your home.

• About
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Mark Pearce

With over four decades in the glazing industry, Mark Pearce has been at the heart of KJM Windows & Conservatories since 1983. Starting as a building labourer, he quickly rose through the ranks, working as a window and door installer from 1984, a factory operator manufacturing windows later that year, factory manager in 1992, and joining the sales team in 1994. Becoming a Director in 2002, and finally, the sole owner in 2010, Mark Pearce is truly a double glazing expert and has led KJM to become a leading supplier of high-quality windows, doors, and conservatories across Andover and the South of England.

Mark Pearce is a highly experienced specialist in the double glazing industry, having built his knowledge from the ground up through hands-on experience in installation, manufacturing, sales, and business management. Beyond his role at KJM, Mark is a keen blogger, writer, and traveller, often sharing insights on the latest innovations in the home improvement industry.

Latest posts by Mark Pearce (see all)

• Window Scrappage & Recycling: How We’re Closing the Loop - 19 November 2025
• KJM Group MD Attends House of Commons Event to Champion UK Glass Industry - 14 November 2025
• Industry News Alert: Pilkington Discontinues Classic Flemish Glass - 14 November 2025