Double glazing installers in London
582 companies have a registered office in London under the glazing trade (SIC code 43342).
Extract from the public Companies House register (glazing trade, SIC 43342) - not a recommendation or a vetted panel. Select a company for its full register entry and local context.
| Company | Area | Registered | Accounts filed | Details |
|---|---|---|---|---|
| Essex Glass LimitedLtd · Small · no. 00790018 | W1J | 1964 | 2025 | View details → |
| Hamilton Glass Products LimitedLtd · Small · no. 00895448 | SW1V | 1967 | 2025 | View details → |
| Windglass (Epsom) LimitedLtd · Small · no. 00938561 | SW20 | 1968 | 2025 | View details → |
| South Norwood Glazing Company Limited(The)Ltd · Small · no. 01196602 | SE25 | 1975 | 2025 | View details → |
| Express Glazing Contractors LimitedLtd · no. 01580127 | E17 | 1981 | 2025 | View details → |
Source: Companies House free company data - SIC 43342, active companies, with dormant and long-overdue filers removed. Company status and details can change; check the register for the current position.
How to choose between them
A whole-home job in London typically runs £3,800 to £11,300 (local cost factor 1.25×), so the spread between three quotes on the same brief is worth chasing. Victorian and Edwardian terraces dominate inner boroughs, alongside interwar semis in outer London, 1960s-70s tower blocks, and modern glass-fronted apartments in redevelopment zones like Nine Elms and King's Cross.
Heritage note: London has over 1,000 conservation areas across 33 boroughs - always check with the local council planning portal before ordering.
Whichever company you approach: get three written, itemised quotes, confirm FENSA or CERTASS registration on the scheme's own register, check the guarantee is insurance-backed, and ask for two recent local installs you can look at. Our guide to comparing double glazing quotes walks through it.