The 10 window and door fitters from Google's results for London, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleNew Barnet, Barnet
Barnet Window Company supplies and installs replacement windows, doors, and conservatories across Barnet, Enfield, and London. Product options include bi-folding doors, sash windows, and secondary glazing systems for residential properties.
020 8449 4747 39 Bulwer Rd, New Barnet, Barnet EN5 5EU
on GoogleCroydon
Window Fitters supplies and installs commercial and residential windows and doors across Croydon, London, and Surrey. The company offers both complete fitting services and glazier labour, with installations engineered to meet national ventilation and thermal performance regulations.
020 3411 0589 139 Wentworth Rd, Croydon CR0 3HZ
on GoogleLondon
SDG Windows Ltd installs double-glazed windows and exterior doors for domestic properties in South East London. The product line includes composite, French, bi-fold, and sliding patio doors, along with replacement sash and aluminium windows.
020 8616 1516 319 Sydenham Rd, London SE26 5EW
on GoogleLondon
Premier Windows fits double-glazed doors and windows for homeowners in South London. Product options include PVC, aluminium, and timber frames designed for thermal performance and conservation areas.
020 8683 4446 4 Grecian Cres, London SE19 3HH
on GoogleIpswich
Window Fitters London supplies and installs uPVC and aluminium windows alongside front, back, French, and heritage doors. The company fits styles such as casement, bay, sliding sash, and tilt and turn windows with double or triple glazing options.
0800 666 444 1 Olympus Cl, Ipswich IP1 5LJ
on GoogleChingford Industrial Estate, Chingford
Operating from a factory and showroom in Chingford, Northlondon Windows supplies and installs uPVC and aluminium windows, composite doors, and bi-fold doors. Its fitters also construct garden rooms and replace sash windows for residential properties in and around Barnet.
020 8345 6008 unit 14, Chingford Industrial Estate, Chingford E4 8DJ
on GoogleAldgate, London
Lotus Windows fits and supplies double glazing for both residential and commercial properties across London. Located in Aldgate, the team carries out window and door installations designed to improve property insulation and visual appearance.
07880 793441 28 Osborn St, Aldgate, London E1 6TD
on GoogleKingston upon Thames
Thames Windows and Doors fits glass and glazing products for properties across London, Surrey, and the South East. Based in Kingston upon Thames, each fitting team includes a carpenter, with an assigned account manager overseeing each installation project from start to finish.
020 7205 2444 63a Park Rd, Kingston upon Thames KT2 6DE
London
Osborn Windows installs double and triple glazed windows, exterior doors, and conservatories across South London, Kent, and Surrey. The firm fits aluminium, timber, and uPVC frames in various styles including bay, casement, sliding sash, and tilt and turn.
London
The London Window Company supplies and fits double glazed windows, front doors, patio doors, and roofline products across Central and North London. It also constructs conservatories and orangeries, alongside installing timber frames and sliding sash windows.
In London, upvc window typically costs £490 – £980. Labour in Greater London runs 22% above the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "window fitters london". They are ranked on Google rating, online presence and other factors.
The figures above are London ranges. These explain what drives them, so you can read a quote properly.
2026 prices per window and for a whole house in uPVC, aluminium and timber, the extras a quote can leave out, and the certificate and planning rules in each UK nation.
The size limits that let a conservatory go up without planning permission in England, when the building regulations exemption applies and how it is lost, and the rules in Wales, Scotland and NI.
What mist between the panes means, why it will not go away, what a new sealed unit costs in 2026, when the whole window is worth replacing, and the rules for replacing only the glass.
Replacement windows must meet building regulations for thermal performance. A FENSA registered installer self-certifies and sends you a certificate. An unregistered one means you need a building control application, and no certificate is a problem when you sell.