The London Sash Window Company

Reviews (132)

• 9

  Double Glazing Installation

  Posted 5 days ago

  Professional and would recommend

  I selected London Sash Window Company to replace all the sash windows in my renovation project and they did a fantastic job with a like-for-like replacement of the existing ones. The on-site team took measurements and the installation process for all the windows took around a week. I would highly recommend them for any future window related works.
  Verified reviewer

  Job location: SW1P
• 10

  Timber / Wooden Windows Installation

  Posted 15 July

  Excellent end to end service

  We had two windows fitted, and are so pleased with the service provided and the end result. The team did everything they said they would and the fitters were efficient, tidy and very nice. The windows themselves look beautiful, are much safer and keep out the noise/draughts. I look forward to engaging them again for the next lot of windows we replace!
  Verified reviewer

  Job location: SE25
• 10

  Wooden Sash Windows Repair

  Posted 12 May

  draughtproofing

  I had draught proofing and overhaul of my timber sash windows. The quality of service was exceptional. They came on time, covered up the whole area and efficiently did the work. It was tidy, quick and high quality work. Prior to this the customer service was exceptional as I explored different insulation options.
  Verified reviewer

  Job location: SW4

  R

  Shreyosi S
• 10

  Timber / Wooden Windows Installation

  Posted 04 February

  What a relief - a big job made easy!

  I had all 7 original sash windows replaced - Greg and the team were fast, efficient and helpful. I had been dreading the disruption as I work largely at home, but they were finished in 4 and a half days and the results not only look great the house is so much brighter and warmer!
  Job location: SW18
• 10

  Wooden Sash Windows Installation

  Posted 20 January

  Great company

  Great! We had new sash windows installed as well as existing ones refurbished and The London Sash Window Company were brilliant throughout the process. From the intial quote and surveys to the final installation, they were amazing. The quality of the windows is fantastic, the installation itself was quick and professional, and the customer services were great. Would recommend.
  Verified reviewer

  Job location: SE13

  R

  Neil K
• 8

  Wooden Sash Windows Installation

  Posted 15 December 2025

  Good quality products and professional fitting

  Professional, helpful, and efficient replacement of sash windows in a conservation area - so facing a fair amount of red tape and requirements! The windows are great quality - I can already feel and hear the difference of the double glazing in terms of cold and outdoor sound.
  Verified reviewer

  Job location: N1