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KJM Group Andover & Hampshire

Founded in 1982, KJM has provided excellent customer service to homeowners around Andover and Hampshire areas with a personal touch.

With various accreditations and implementing our no pressure promise, we ensure all our customers are happy and satisfied with their service and experience.

1982 - The Business was Founded

KJM were incorporated in January 1983, the name comes from the founding directors Ken Hammant, John Creasey and Mick Burrell. We began manufacturing uPVC windows and doors from our Andover base and were soon selling our products around Hampshire.

1983 - Today's MD Was Appointed

Mark Pearce joined the KJM team initially as an installer and then worked in our factory manufacturing Veka windows. Mark progressed through the company and ended up as sales manager.

1996 - The Year of Change

KJM enjoyed had enjoyed much success from the start but manufacturing made it difficult to offer a broader portfolio of glazing products. Prospective customers started asking for aluminium and timber fenestration, so the decision was made to stop manufacturing.

2010 - New Owner

Mark took over KJM and became the sole owner of the company. The ethos of the old team continues as KJM is the business you still know today. With love for providing high quality products and exceptional customer service, we all strive for happy homeowners.

Meet The Team

Mark Pearce

Managing Director

Joining KJM in 1983, Mark runs KJM as Managing Director and owner with vast experience in the Management and Sales industries.

Paul Ginger

Sales Manager

Working alongside Charles Flint and Paul Williams, Paul leads the sales team with his experience as a previous fitter for KJM. 

Andy Turner


Andy has been with KJM from its inception. He is therefore one of our most experienced installers.

Charles Flint

Sales Consultant

Charles Flint joined the sales team after six weeks working with the installation teams, gaining invaluable knowledge and experience.

Kerry Bergin

Service Engineer

Kerry joined the company in 1987 and worked in manufacturing for nice years. He is now also the company’s Service Engineer.

Anthony Crean


Anthony is the head of our building team and will be the first worker you will see on-site if you buy a KJM conservatory.

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.

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.

The consequence of our efforts is that more than 80% of our work comes through recommendation or existing customers returning to us again!

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.


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

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. You can also read our case study.

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