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RUSSELL BLACK LIMITED: plumbing, heating and air-conditioning company in Harrow
RUSSELL BLACK LIMITED is an active limited company (no. 00923135), incorporated in 1967, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HA3 (Harrow), and 1,754 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
1,754 similar companies within 10 km. Harrow
What homes around HA3 need
In HA3 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).
4% of sampled postcodes in HA3 sit in a conservation area (on-record, 1,261 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 |
|---|---|---|---|
| S&R PLUMBING LIMITED | 17204212 | HA7 | ≈0.2 km |
| CENTRAL FLOW SERVICES LTD | 08650153 | HA7 | ≈0.3 km |
| COMPTRADE LIMITED | 02652338 | HA7 | ≈0.3 km |
| MAX GAS LTD | 13278739 | HA3 | ≈0.3 km |
| COPPER PLUMBER LTD | 16976463 | HA7 | ≈0.3 km |
| RHD GAS & PLUMB LTD | 10984374 | HA3 | ≈0.3 km |
| HPV SUPPILES LTD | 14367561 | HA3 | ≈0.3 km |
| CLARKES HEATING & PLUMBING LIMITED | 08234050 | HA7 | ≈0.5 km |
| MK WATER POWER & GAS LIMITED | 10813538 | HA7 | ≈0.5 km |
| HERTS WASTE LIMITED | 10275394 | HA3 | ≈0.5 km |
Company record
| Field | Value |
|---|---|
| Company number | 00923135 |
| Name | RUSSELL BLACK LIMITED |
| Status | Active |
| Incorporated | 21 Nov 1967 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HA3 8RZ |
| Outcode | HA3 |
| 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 00923135 |
Companies House record: RUSSELL BLACK LIMITED, company 00923135, 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.