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J MCWILLIAMS & DAD LTD: plumbing, heating and air-conditioning company in Halstead
J MCWILLIAMS & DAD LTD is an active limited company (no. 07340333), incorporated in 2010, registered for plumbing, heating and air-conditioning installation (SIC 43220), with its registered office in CO9 (Halstead), and 112 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
112 similar companies within 10 km. Halstead
What homes around CO9 need
In CO9 last summer (2026) there were ≈8 nights that stayed above 18 °C — 4 times the 1991–2020 average of 1.8 (ERA5 reanalysis, grid ≈30 km, lower than street temperatures in cities).
17% of sampled postcodes in CO9 sit in a conservation area (on-record, 928 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 |
|---|---|---|---|
| FORBES PLUMBING LIMITED | 04603026 | CO9 | under 0.1 km |
| S AMERIO CONTRACTS LIMITED | 04762282 | CO9 | under 0.1 km |
| R & D LUDLAM PLUMBING & HEATING LIMITED | 05771393 | CO9 | under 0.1 km |
| APL HEATING SOLUTIONS LIMITED | 11281559 | CO9 | under 0.1 km |
| MANN PLUMBING AND HEATING LIMITED | 05608908 | CO9 | ≈0.3 km |
| PERITUS BUILDING SERVICE ENGINEERS LIMITED | 06434663 | CO9 | ≈0.3 km |
| MARK 1 BOILER SERVICES LIMITED | 07578527 | CO9 | ≈0.3 km |
| PLUMBING & DRAINAGE SOLUTIONS LIMITED | 10888018 | CO9 | ≈0.3 km |
| KJJ SMITH PLUMBING AND HEATING LTD | 13890725 | CO9 | ≈0.3 km |
| R BEAN PLUMBING AND HEATING LIMITED | 13977778 | CO9 | ≈0.3 km |
Company record
| Field | Value |
|---|---|
| Company number | 07340333 |
| Name | J MCWILLIAMS & DAD LTD |
| Status | Active |
| Incorporated | 9 Aug 2010 |
| SIC | 43220 · plumbing, heat and air-conditioning installation |
| Registered office postcode | CO9 2AJ |
| Outcode | CO9 |
| 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 07340333 |
Companies House record: J MCWILLIAMS & DAD LTD, company 07340333, 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.