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J M POTTS LTD: plumbing, heating and air-conditioning company in St Albans
J M POTTS LTD is an active limited company (no. 11397024), incorporated in 2018, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in AL4 (St Albans), and 328 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
328 similar companies within 10 km. St Albans
What homes around AL4 need
In AL4 last summer (2026) there were ≈11 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).
8% of sampled postcodes in AL4 sit in a conservation area (on-record, 787 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 |
|---|---|---|---|
| ABBEY PLUMBING & HEATING (ST.ALBANS) LIMITED | 14624730 | AL4 | ≈0.6 km |
| C&D GENERAL BUILDING LIMITED | 15515110 | AL4 | ≈0.8 km |
| AF CLARK LIMITED | 07854672 | AL1 | ≈0.9 km |
| PHG LIMITED | 06694408 | AL1 | ≈0.9 km |
| THE JOBBING PLUMBER LTD | 17113433 | AL4 | ≈1.1 km |
| TECH PLUMBING LTD | 15722145 | AL1 | ≈1.3 km |
| MURRAY HEATING & PLUMBING SERVICES LTD | 15890688 | AL1 | ≈1.4 km |
| TILE & MOSAIC ST ALBANS LTD | 13212969 | AL4 | ≈1.5 km |
| A & M HEATING (UK) LIMITED | 06151632 | AL4 | ≈1.5 km |
| J&K PROPERTY SERVICES LTD | 09722208 | AL4 | ≈1.6 km |
Company record
| Field | Value |
|---|---|
| Company number | 11397024 |
| Name | J M POTTS LTD |
| Status | Active |
| Incorporated | 4 Jun 2018 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | AL4 0UY |
| Outcode | AL4 |
| 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 11397024 |
Companies House record: J M POTTS LTD, company 11397024, 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.