Call 07900 218301 for a free estimate

Choose Diamond Locksmiths & Windows for a service you can trust

Diamond Locksmiths & Windows is a family-run business led by Kristian Newton.

For over 25 years we have provided a professional, friendly and reliable double glazing installation service throughout Surrey and South London, including Cheam, Sutton, Wimbledon, Epsom, Putney, Wandsworth, Croydon, Kingston and the surrounding areas.

We pride ourselves on excellent customer service and believe that the customer always comes first. Attention to detail, precision in our work and careful understanding of customer needs have also helped drive our success.

Working closely with you, we’ll use our knowledge and expertise to ensure you get the right windows, doors and glass for your home. As well as enhancing the look of your property, Diamond Locksmiths & Windows’ doors and windows are designed to provide greater energy efficiency, so you can look forward to reducing your heating bills.

Every installation comes with a 10-year insurance backed guarantee, along with a FENSA building control certificate to show that your installation complies with current building regulations. It means that you really can put your trust in Diamond Locksmiths & Windows.

But don’t just take our word for it, read what some of our customers have to say or visit for more reviews.

Isn’t it time you asked Diamond Locksmiths & Windows to give you a free no-obligation quote? Call us on 07900 218301, or email

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