Welcome to Raven Bespoke Improvements.

We design, supply and install quality products to suit your lifestyle.

Our extensive knowledge and experience ensure your choice of product will be as functional as it is beautiful.

Who we are

Raven Bespoke Improvements is a professional home improvement company based in Carshalton.

We specialize in double glazing, conservatories, and bi-folding door systems and have access to most makes and manufacturers, which means we are always able to supply the most current products and designs on the market.

Our area of service is South London, Surrey and Sussex so if you need a project dealt with give us a call.

Our experience enables us to take you through every aspect of your project from the choice of product to the final finishing and touches.

Why choose Raven?


  • 30 years’ experience
  • Competitive prices
  • Fully insured
  • 10-year guarantee on all installations
  • A and A++ rated windows and doors
  • Composite, UPVC, aluminium and timber
  • FENSA Approved Installer
  • Members of Rated People and My Builder

What we do


  • UPVC windows and doors
  • Composite doors
  • Aluminium windows
  • Timber windows and doors
  • Bi-fold doors and patio doors
  • Conservatories
  • Orangeries
  • Repairs, replacement and improvement

How we can help 

We are a construction company specialising in home improvements. We strive for excellence in everything we do.

Our close links in the trade mean we can source, supply, and fit a wide variety of high-quality products at a reduced rate, including composite doors, state-of-the-art aluminium bi-fold doors, A-rated triple glazing and Velux windows.

From fitting a modest 3-bed semi with new UPVC windows, to replacing a solid external wall with bi-folding doors on a luxury home, we’ve done it all.

Our experience (over 30 years in the trade) means we have a unique eye for finding solutions to challenges. We always recommend the right products first time and can work to a budget to help you achieve your dreams.

We come out to you

Should you want to take your enquiry further, we’ll come out to you. An onsite visit is the best way for us to get to know you and your project better. We serve South London, Surrey and Sussex, and all local surrounding areas.

If you have architectural drawings, or artwork, we’re happy to review these with you and share ideas. But we’re just as happy to work with an idea you have in your head if that’s all you have. We’re good like that.

Home surveys are free and also necessary for us to provide you with a detailed quote. All quotes are itemised and include VAT. Quotes are also fixed for a period of 60 days, so you have time to choose without any pressure.

Our Products


Windows are available in many designs and different types of products, each one with its own unique advantage for the purpose and situation where the installation is to be carried out. Whether your choice is wood , aluminium or Pvc we have it


The latest door designs combine excellent thermal performance and security as well as providing a great visual appearance.Like our windows all our doors can be supplied in many colours which can be different each side of the door.


Installing a conservatory will increase the size of your property by creating a larger spacious room.This room will offer many usage options such as creating an extra room as your family grows.Providing a peaceful area to relax with extra light

6 Reasons to choose Raven


From the products we source to our handy work, you can always expect the best quality. We don’t do second best or corner cutting.


We’re more experienced than most with over 30 years in the trade. You can count on our experience to get the job done.


We’re practical problem solvers. Utilise our vast knowledge to your advantage to see projects through on budget and on time.

Close ties

We’ve built up a close relationship with leading and smaller manufacturers, tradespeople and vendors within the construction industry.

Work is guaranteed  

We provide a 10-year guarantee on all installation work. This guarantee covers both workmanship and product defects. For further peace of mind, we also provide free deposit insurance covering 25% of the contract price.


We are a FENSA Approved Installer which means you can expect the highest-quality installation work from us. FENSA is the government-authorised scheme for monitoring building regulation compliance with respect to window and door installation. Being FENSA approved means not only do we meet their standards we also continually maintain them to ensure ongoing building regs compliance.


Take advantage of our free of charge, no-obligation home design visit, where one of our designers will meet with you to discuss your project. You can browse our extensive catalogues to help you decide on the style, design and exact product to suit your needs. We can then provide you with a free quotation, with absolutely no obligation to proceed.

You can contact us by email or you can call us on 0800 009 6065 Monday to Friday.

We’re here to help no matter what stage your project is at.