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HSL (LONDON) LTD: plumbing, heating and air-conditioning company in Ruislip
HSL (LONDON) LTD is an active limited company (no. 08821853), incorporated in 2013, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in HA4 (Ruislip), and 1,386 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
1,386 similar companies within 10 km. Ruislip
What homes around HA4 need
In HA4 last summer (2026) there were ≈10 nights that stayed above 18 °C — 7 times the 1991–2020 average of 1.5 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
7% of sampled postcodes in HA4 sit in a conservation area (on-record, 1,137 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 |
|---|---|---|---|
| REDSTONE HEATING LTD | 15555236 | HA4 | ≈0.1 km |
| LONDON AND HOME COUNTIES LIMITED | 01659188 | HA4 | ≈0.3 km |
| MCMURDIE HEATING & ENERGY LTD | 07603510 | HA4 | ≈0.4 km |
| HOME BOILERS LTD | 08569564 | HA4 | ≈0.4 km |
| MCMURDIE BATHROOMS LTD | 09473104 | HA4 | ≈0.4 km |
| MCMURDIE PLUMBING & MAINTENANCE LTD | 09473232 | HA4 | ≈0.4 km |
| STRUCKTOR UK LIMITED | 09480362 | HA4 | ≈0.4 km |
| AIM HIGH CONSTRUCTION LTD | 11506365 | HA4 | ≈0.4 km |
| NCS BACK OFFICE SERVICES LTD | 12723250 | HA4 | ≈0.4 km |
| G&V LONDON CONSTRUCTION LTD | 12863258 | HA4 | ≈0.4 km |
Company record
| Field | Value |
|---|---|
| Company number | 08821853 |
| Name | HSL (LONDON) LTD |
| Status | Active |
| Incorporated | 19 Dec 2013 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | HA4 8HW |
| Outcode | HA4 |
| 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 08821853 |
Companies House record: HSL (LONDON) LTD, company 08821853, 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.