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ONYX HEATING AND PLUMBING LTD: plumbing, heating and air-conditioning company in London
ONYX HEATING AND PLUMBING LTD is an active limited company (no. 17151790), incorporated in 2026, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in W1B (London), and 3,516 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
3,516 similar companies within 10 km. London
What homes around W1B need
In W1B 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).
99% of sampled postcodes in W1B sit in a conservation area (on-record, 294 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 |
|---|---|---|---|
| WOLANI HOUSING MANAGEMENT LTD | 13726540 | W1B | under 0.1 km |
| R & A SOLAR LIMITED | 15130620 | W1B | under 0.1 km |
| PAMO INDUSTRIES LTD | 16661337 | W1B | under 0.1 km |
| C&C GAS SERVICES LIMITED | 17002837 | W1B | under 0.1 km |
| CORE POINT PLUMBERS LTD | 17258170 | W1B | under 0.1 km |
| FOXTER PROPERTIES LTD | 14222720 | W1S | ≈0.2 km |
| FOXTER GROUP LTD | 15800633 | W1S | ≈0.2 km |
| CENTRAL HEATING & BOILERS LTD | 08739717 | W1G | ≈0.4 km |
| HAMMERSMITH HEATING LTD | 12230476 | W1G | ≈0.4 km |
| GBM MECHANICAL & ELECTRICAL LTD | 12488109 | W1G | ≈0.4 km |
Company record
| Field | Value |
|---|---|
| Company number | 17151790 |
| Name | ONYX HEATING AND PLUMBING LTD |
| Status | Active |
| Incorporated | 11 Apr 2026 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | W1B 4HB |
| Outcode | W1B |
| 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 17151790 |
Companies House record: ONYX HEATING AND PLUMBING LTD, company 17151790, 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.