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KEYSTONE LONDON GROUP LIMITED: plumbing, heating and air-conditioning company in London
KEYSTONE LONDON GROUP LIMITED is an active limited company (no. 16435424), incorporated in 2025, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SW3 (London), and 3,461 similar companies have a registered office within 10 km. If you need an MCS-certified air-to-air installer, MCS lists 0 installers certified for air-to-air heat pumps yet (checked 25 Sep 2026), so no company here can offer the £2,500 grant route today.
Active
Within 10 km
3,461 similar companies within 10 km. London
What homes around SW3 need
In SW3 last summer (2026) there were ≈12 nights that stayed above 18 °C — 8 times the 1991–2020 average of 1.6 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
72% of sampled postcodes in SW3 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).
Hot nights: ERA5-ARCO, June–August, minimum at or above 18 °C, 2026 against the 1991–2020 mean, retrieved 25 Sep 2026. Conservation-area share: sampled postcode points, snapshot 25 Sep 2026. Noise limit from the decision contract, checked 25 Sep 2026.
Nearest similar companies
| Company | Number | District | Distance |
|---|---|---|---|
| RENZY LTD | 16406076 | SW3 | under 0.1 km |
| CHOWE DRAINAGE LTD | 17353322 | SW3 | ≈0.3 km |
| FIORIGHT PLUMBING SERVICES LTD | 16836139 | SW3 | ≈0.4 km |
| INSIGNIA GROUP LIMITED | 12059349 | SW7 | ≈0.6 km |
| CAMPBELL & KAMINSKI LIMITED | 06219791 | SW3 | ≈0.6 km |
| HYDROLOGY PLUMBING AND HEATING LIMITED | 11196357 | SW7 | ≈0.7 km |
| AIRCO SOLUTIONS LTD | 16637063 | SW7 | ≈0.7 km |
| BINGHAM BUILDING SERVICES LTD | 16765316 | SW7 | ≈0.7 km |
| LONDON GAS INSPECTIONS LIMITED | 13921760 | SW3 | ≈0.7 km |
| FERDUN MGMT LTD | 12135290 | SW1X | ≈0.7 km |
Company record
| Field | Value |
|---|---|
| Company number | 16435424 |
| Name | KEYSTONE LONDON GROUP LIMITED |
| Status | Active |
| Incorporated | 7 May 2025 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | SW3 2DY |
| Outcode | SW3 |
| Nation | England |
| Air-to-air signal | not yet observed, checked 25 Sep 2026 |
| F-Gas | not yet observed, checked 25 Sep 2026 |
| MCS air-to-air | not yet observed, checked 25 Sep 2026 |
| Retrieved | 25 Sep 2026 |
| Dataset | https://download.companieshouse.gov.uk/BasicCompanyDataAsOneFile-2026-09-01.zip |
| Companies House page | Company 16435424 |
Companies House record: KEYSTONE LONDON GROUP LIMITED, company 16435424, status Active, 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. Snapshot 1 Sep 2026, retrieved 25 Sep 2026. The 10 km count is equirectangular to 0.1 km. MCS air-to-air confirmed in this catalogue: 0, checked 25 Sep 2026.
Better than a reviews catalogue: the Companies House record, the district hot-night count and the MCS air-to-air observation are on one page.