KJM Team

KJM's Credentials - We have won many awards for Customer Service & Conservatory design

Credentials

KJM were formed in January 1983, we started life as KJM Replacement Windows Ltd and it was decided that as our range of products grew over the years and included conservatories, that we changed our name. So the company was renamed KJM Group Ltd. Over the years KJM has become a well established and a reputable company, which has gained the trust of thousands of home owners and businesses alike! We have been named as one of the top five UK companies no less than five times by our peers. Our diverse range of products gives you the options that you may require. We don’t just sell PVCu, but offer timber and aluminium as well. We backed this up with a comprehensive 10 year warranty (insurance backed) that has a proven record. Sales calls are free, without pressure and our pricing is competitive. Give us a try, you wont be disappointed


KJM Group has been established in Andover, Hampshire since 1983 and has built its reputation through quality installation, customer service, and a long-term commitment to the home improvement industry.

The company holds current industry accreditations and has received recognition from independent organisations and industry bodies over more than four decades. We are proud to be a long-standing member of the Glass & Glazing Federation (GGF).

Current Accreditations & Memberships

Recent Industry Recognition

Historical Awards & Achievements

KJM Group's history of industry recognition extends back many years. Where an original external award page remains available, we have provided a link to the independent source. Historical achievements are retained because they form part of the company's established track record.

Long-Term Customer Service

KJM Group has maintained long-standing commercial relationships with customers and organisations as a result of our focus on customer service and installation quality. In some cases, these relationships have continued for more than 30 years.

Our Which? Trusted Trader Promise

KJM Group was successfully endorsed as a Which? Trusted Trader Approved provider in June 2014 and continues to hold Trusted Trader status to this day.

Which? Trusted Traders assess businesses against a strict range of requirements designed to help consumers identify reputable traders. The rigorous assessment includes checks relating to references, financial health, interviews and assessments, and an absolute agreement to the relevant code of conduct.

KJM Group is deeply committed to the Which? Trusted Traders code of conduct and is subject to ongoing requirements associated with maintaining our Trusted Trader status. Which? Trusted Traders also provides access to Alternative Dispute Resolution arrangements for relevant customers.

View KJM Group's current Which? Trusted Trader profile to see our current status, read independently verified reviews, and view additional information about our business operations.

InternalShowroom

About KJM

Originally manufacturing our own windows on West Portway Industrial Estate in Andover, the company concentrated on uPVC windows as we were unable to manufacture anything else. In these early years, KJM won some substantial commercial contracts.

Over time the economics of manufacturing on a relatively small scale proved not to be cost-effective and, with many new materials becoming available, and customer trends requiring a more diverse range of products, we ceased manufacturing in 1996. This move enabled KJM to offer a much larger product portfolio. Today we can offer a huge range of windows, doors and conservatories in uPVC, aluminium and hardwood.

VIEW OUR WINDOWS
Infinity Timber Effect Windows Andover & Hampshire

Our Services

We, understand the principle that people may require a quotation to find out a cost and not be bullied into making a purchase.

Customer service is paramount to KJM as we rely on most of our business coming through recommendation. No one can promise that every job will run absolutely perfectly – even the best has the odd hitch on rare occasions, but we can assure you that we strive for complete customer satisfaction.

A significant proportion of KJM’s work comes from customer recommendations and returning customers.

Our Accreditations

Throughout our business history, we have been delighted to receive several accreditations, awards and partnerships in our fields. We have installed many large projects for clients such as Winchester City Council, Peverel, RLHA, Grainger PLC and The Diocese of Winchester.

We have also become Which?, Checkatrade and FENSA approved for our services as we continue to provide our customers with high quality home improvement services and products.

Home Improvements KJM

No Pressure Promise

At KJM Windows & Conservatories, we pride ourselves on our no hassle, no pressure approach to providing high-quality home improvement products to the thousands of customers who have put their trust in us since 1982.

It is our experience that the last thing our customers want is a high-pressure sales person in their home, especially when they will not leave until they have ‘got the order’. Consequently, we at the KJM Group have a ‘No Pressure Promise’ to guarantee that if we are invited into your home, we will not employ any hard sell tactics and will leave immediately the moment anyone feels uncomfortable.

It’s the main reason that none of KJM’s sales staff are commission based. Most of our quotations require us to leave your property WITHOUT providing you with a quotation. You will be emailed or posted your full written quotation for you to peruse at your leisure. If you want to know more about our no pressure promise, don’t hesitate to contact us today.

CONTACT US

Contact Us

We proudly offer various products and services for our customers and homeowners around Andover and Hampshire. If you want more information on our services or a quote, contact us today using our contact form, and we will endeavour to respond as soon as possible.

* indicates required fields


Privacy Policy

© 2026 KJM Group Ltd

Cookie Policy Privacy Policy T&C's

Contact Us

Online Quote