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G MASE LTD: plumbing, heating and air-conditioning company in London
G MASE LTD is an active limited company (no. 10270286), incorporated in 2016, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in E5 (London), and 4,111 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
4,111 similar companies within 10 km. London
What homes around E5 need
In E5 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).
9% of sampled postcodes in E5 sit in a conservation area (on-record, 663 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 |
|---|---|---|---|
| AIA CONTRACTORS LTD | 13069419 | E5 | ≈0.1 km |
| UNBLOCK DRAINAGE SOLUTION LIMITED | 07269931 | E5 | ≈0.3 km |
| IPLUMBIFY LTD | 15502906 | E5 | ≈0.3 km |
| SNC PLUMBING LTD | 11125083 | E5 | ≈0.3 km |
| MK PLUMBING & GAS LIMITED | 17016283 | E5 | ≈0.3 km |
| ODPLUMBING LTD | 17209856 | E5 | ≈0.4 km |
| E PLUMB LIMITED | 08105805 | E5 | ≈0.4 km |
| GALPLUMB LTD | 10562825 | E5 | ≈0.4 km |
| SPEEDY ENERGY LTD | 12836106 | E5 | ≈0.4 km |
| ICON PLUMBING LTD | 14090371 | E5 | ≈0.4 km |
Company record
| Field | Value |
|---|---|
| Company number | 10270286 |
| Name | G MASE LTD |
| Status | Active |
| Incorporated | 11 Jul 2016 |
| SIC | 43220 · plumbing, heat and air-conditioning installation; 43390; 72200; 82990 |
| Registered office postcode | E5 9PT |
| Outcode | E5 |
| 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 10270286 |
Companies House record: G MASE LTD, company 10270286, 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.