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Diamond Locksmiths & Windows

47 Matlock Crescent, Sutton, SM3 9SS Directions

Tel 020 8644 7438
   Open 24 Hours

Why Choose Us?

Family Run Business
Extensive Knowledge
Bespoke Service

Business overview

Double Glazing Installation & Repairs,Locksmith and Bespoke glass solutions.

We are a family run business with over 25 years of experience and we pride ourselves in offering a personal and friendly service.

At Diamond Locksmiths and Windows we offer a bespoke double glazing installation service,and can carry out all sorts of double glazing repairs and we also offer a 24hr call out locksmith service. Replacement windows and doors are a significant investment and with our A rated energy efficient styles and designs we can help you in obtaining the best quality and value for money.

We are FENSA regulated and provide a compulsory 10 year insurance backed Guarantee. Our Products and Services Include: UPVC windows & doors, Aluminium windows & doors, composite doors, Bi-folding Doors, timber & upvc Victorian Sliding Sash Windows, Double Glazing Repairs and a 24Hr Locksmiths Service.

Please find testimonials at

Kindest regards Jonathan Newton


newly installed upvc french doors
Three sided,equal site-line bay window
Chrome fittings,cat flap installed into toughened glass panel.
Image 8 of Diamond Locksmiths & Windows
High security,black composit door,with side panels
Anthracite grey,aluminium bi-folding doors
Anthracite grey,aluminium window
Arched porch door
New windows & doors installed throughout property
Image 4 of Diamond Locksmiths & Windows
we are a fensa registered company
all work fully insured through ggfi

Products & Services

Double glazing installation

Double glazing repairs

Emergency locksmith service

Non emergency locksmith service

Multi-point lock specialist

Misted double glazing repaired

All window locks repaired / replaced

Bespoke glass solutions

Glass splash-backs designed & installed

In house team of professional designers

24 Hour help line

Additional security installed

A rated energy efficient products installed

FENSA regulated

10 year compulsary (IBG's) provided

locks repaired

Burglary repairs

Window opening


Excellent, friendly service.

Really quick, friendly and efficient service from John and his colleague at diamond. Reasonablly priced and honest about the work required. Needed new handles and mechanisms on my double glazed windows. Gives one year workmanship guarantee on request, this could be made clearer when quote given, other than that. Spot on. Highly recommended.
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very impressed with diamonds service

excellent service from diamond, very fast and efficient . Highly recommended! was at my house within 15 mins of me calling him. Even though it was in the horrendous rain, jon got me in my house very quick
Thank you!
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