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N4: plumbing, heating and air-conditioning companies in London
N4 (London) has 26 plumbing, heating and air-conditioning companies registered here (SIC 43220) and 33 electrical and other installation companies (Companies House, 1 Sep 2026); 0 are MCS-certified for air-to-air yet. If the summer is the question, N4 had ≈10 nights above 18 °C in 2026 (5 times the 1991–2020 average of 1.9).
N4
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A&P HEATING AND PLUMBING LIMITED, incorporated 2022, status Active.
Plumbing, heating and air-conditioning companies
Electrical and other installation companies
| Company | SIC | Incorporated | Status | District |
|---|---|---|---|---|
| AB ELECTRICIANS (LONDON) LIMITED | 43210 · electrical installation | 2022 | Active | N4 |
| ALLSTAR ELECTRICAL LTD | 43210 · electrical installation | 2012 | Active | N4 |
| ANTHONY SELF LIMITED | 43210 · electrical installation | 2014 | Active | N4 |
| BAYLY ELECTRICAL & ENERGY LTD | 43210 · electrical installation | 2026 | Active | N4 |
| BUILDING SAS LIMITED | 43210 · electrical installation; 41201; 41202 | 2019 | Active | N4 |
| CARRINGTON MAINTENANCE LIMITED | 43290 · other construction installation | 2024 | Active | N4 |
| CM ACCESS SOLUTIONS LTD | 43290 · other construction installation; 42210; 42220; 42990 | 2022 | Active | N4 |
| E&E ELECTRICAL CONTRACTORS LTD | 43210 · electrical installation; 33140; 71129 | 2024 | Active | N4 |
| EC LONDON ELECTRICAL LTD | 43210 · electrical installation | 2023 | Active | N4 |
| EL.CEM LIMITED | 43210 · electrical installation; 43290 · other construction installation; 41202; 43390 | 2017 | Active - Proposal to Strike off | N4 |
| EVERCORE CONTRACTORS LTD | 43210 · electrical installation; 78200 | 2025 | Active | N4 |
| EYE SPY CCTV LTD | 43210 · electrical installation; 80200 | 2020 | Active - Proposal to Strike off | N4 |
| FD ELECTRICAL INSTALLATIONS LTD | 43210 · electrical installation | 2022 | Active | N4 |
| IORAMA CONSTRUCTION LIMITED | 43290 · other construction installation; 41100; 43320; 43390 | 2019 | Active | N4 |
| JRP ELECTRICAL SOLUTIONS LTD | 43210 · electrical installation | 2024 | Active | N4 |
| LIGHTSIDE LIMITED | 43210 · electrical installation | 1991 | Active | N4 |
| LONDON FIRE SPRINKLERS LTD | 43290 · other construction installation | 2018 | Active | N4 |
| LONDONERS ELECTRIC LTD | 43210 · electrical installation | 2019 | Active | N4 |
| M COLLINS BUILDERS LIMITED | 43290 · other construction installation | 2013 | Active | N4 |
| ME AND THEM CREATIVES LTD | 43290 · other construction installation | 2026 | Active | N4 |
| MEZE HERO LTD | 43210 · electrical installation | 2022 | Active | N4 |
| MITREB LTD | 43290 · other construction installation; 42120; 42990 | 2018 | Active - Proposal to Strike off | N4 |
| NORTHERN CRAFT LIMITED | 43290 · other construction installation; 43341 | 2024 | Active | N4 |
| NUBIAN BUILD LTD | 43290 · other construction installation; 41201; 41202; 68100 | 2020 | Active | N4 |
| OMCURRENT26 LTD | 43210 · electrical installation | 2026 | Active | N4 |
| PAE SERVICES LTD | 43290 · other construction installation | 2025 | Active | N4 |
| PRIME FIRE SAFETY LTD | 43290 · other construction installation | 2021 | Active | N4 |
| RAG SUPPORT LTD. | 43210 · electrical installation; 43390; 68320 | 2003 | Active | N4 |
| SAM FORSTER ASSOCIATES LTD | 43290 · other construction installation | 2018 | Active | N4 |
| SAMIZ SERVICES LTD | 43290 · other construction installation; 70229; 77110 | 2023 | Active | N4 |
| TARIM LIMITED | 43210 · electrical installation | 2014 | Active - Proposal to Strike off | N4 |
| WHITECROFT SCAFFOLDING & CONSTRUCTION LIMITED | 43290 · other construction installation; 43991 | 2024 | Active | N4 |
| ZEWD LTD | 43290 · other construction installation; 41201; 41202 | 2024 | Active | N4 |
What homes around N4 need
In N4 last summer (2026) there were ≈10 nights that stayed above 18 °C — 5 times the 1991–2020 average of 1.9 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
26% of sampled postcodes in N4 sit in a conservation area (on-record, 868 live postcodes).
In England an air-source heat pump on a house can be permitted development under Class G when the conditions hold, including the MCS 020a noise limit of 37.0 dB(A) (§3.2 Step 8).
Companies House snapshot 1 Sep 2026, retrieved 25 Sep 2026. The address shown is the registered office, not a verified operating base. This catalogue is a directory of incorporated businesses, not an exhaustive installer register. Hot nights: ERA5-ARCO for N4, June–August, minimum at or above 18 °C, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points in N4, snapshot 25 Sep 2026.
Better than a town-wide list: these are the registered offices in N4, with that district's hot nights and planning rule.