Home / Installers / London
WALSH & SON LIMITED: plumbing, heating and air-conditioning company in London
WALSH & SON LIMITED is an active limited company (no. 04500328), incorporated in 2002, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in SW16 (London), and 2,312 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
2,312 similar companies within 10 km. London
What homes around SW16 need
In SW16 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).
20% of sampled postcodes in SW16 sit in a conservation area (on-record, 1,352 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 |
|---|---|---|---|
| PRESTIGE P&G SERVICES LTD | 09039042 | SW16 | ≈0.3 km |
| WRIGHT DAVIS HEATING & PLUMBING LTD | 16681744 | SW16 | ≈0.3 km |
| CN PLUMBING AND DRAINAGE SERVICES LIMITED | 17271539 | SW16 | ≈0.3 km |
| WCM REFREGIRATION & AIR CON LIMITED | 14378043 | SW16 | ≈0.4 km |
| HORIZON BUILDERS LONDON LTD | 16222995 | SW16 | ≈0.5 km |
| MOTOC LARISA TRANS LTD | 11293354 | SW16 | ≈0.5 km |
| 237 GAS LIMITED | 15607860 | SW16 | ≈0.5 km |
| CERCEL LTD | 08005564 | SW16 | ≈0.6 km |
| AIMS GROUP LTD | 15211854 | SW16 | ≈0.6 km |
| M25 GAS SAFETY ENGINEERS LTD | 08195294 | SW16 | ≈0.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 04500328 |
| Name | WALSH & SON LIMITED |
| Status | Active |
| Incorporated | 31 Jul 2002 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | SW16 2EL |
| Outcode | SW16 |
| 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 04500328 |
Companies House record: WALSH & SON LIMITED, company 04500328, 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.