Window & double glazing installers in Greater London
1,616 companies · 26 towns & cities
Greater London has 1,616 active window and glazing businesses on the Companies House register. Choose a town below to see the companies listed there, or request free quotes from FENSA or Certass registered installers covering your postcode.
Local climate (2025)
Annual rainfall613mm
Frost days21
Max gust recorded81.4km/h
Temperature range-4.5° to 33.6°C
613mm of rain and 21 frost days in 2025 (31% less rain than the UK average) — worn seals and single glazing let more of that in here than in a drier county.
Source: Open-Meteo historical archive, 2025 daily readings for Greater London.
Largest towns in Greater London
London1,582 companiesEast Ham5 companiesGreater London2 companiesLeytonstone2 companiesNew Eltham2 companiesPalmers Green2 companiesWalthamstow2 companiesAbbey Wood1 companyActon1 companyBarnet1 companyChingford1 companyColliers Wood1 company
Need a window installer in Greater London?
Free, no-obligation quotes from FENSA or Certass registered installers near you.
Get Free Quotes →All towns in Greater London
London (1582)East Ham (5)Greater London (2)Leytonstone (2)New Eltham (2)Palmers Green (2)Walthamstow (2)Abbey Wood (1)Acton (1)Barnet (1)Chingford (1)Colliers Wood (1)Cramlington (1)Ealing (1)Edmonton (1)Greenwich (1)Hanwell (1)Londres (1)Manor Park (1)Norbury (1)Stratford (1)Thamesmead (1)Wanstead (1)Westminister (1)Willesden (1)Wood Green (1)