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CORNERSTONE PHE LTD: plumbing, heating and air-conditioning company in Oxford
CORNERSTONE PHE LTD is an active limited company (no. 11731217), incorporated in 2018, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in OX1 (Oxford), and 124 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
124 similar companies within 10 km. Oxford
What homes around OX1 need
In OX1 last summer (2026) there were ≈6 nights that stayed above 18 °C — 6 times the 1991–2020 average of 1.0 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
46% of sampled postcodes in OX1 sit in a conservation area (on-record, 842 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 |
|---|---|---|---|
| BEAUCHAMP & BUTLER PLUMBING & HEATING LTD | 05864768 | OX1 | ≈0.9 km |
| MILO GAS LTD | 12990317 | OX1 | ≈1.0 km |
| ZONDA AIR LIMITED | 17393645 | OX14 | ≈1.1 km |
| RMZ HEATING & ELECTRICAL LTD | 12003598 | OX4 | ≈2.0 km |
| OXFORDSHIRE ELECTRICS & PLUMBING LTD | 13416760 | OX1 | ≈2.3 km |
| STOVETEK LTD | 08650780 | OX4 | ≈2.3 km |
| OXFORD HVAC LIMITED | 17421684 | OX4 | ≈2.5 km |
| AZA PLUMBING AND HEATING LTD | 16693685 | OX4 | ≈2.7 km |
| STEPHEN LANIGHAN LTD | 11230594 | OX4 | ≈2.7 km |
| OXHEAT SERVICE LTD | 15156881 | OX4 | ≈2.8 km |
Company record
| Field | Value |
|---|---|
| Company number | 11731217 |
| Name | CORNERSTONE PHE LTD |
| Status | Active |
| Incorporated | 17 Dec 2018 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | OX1 5PR |
| Outcode | OX1 |
| 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 11731217 |
Companies House record: CORNERSTONE PHE LTD, company 11731217, 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.