- Companies
- Plumbers and heating engineers
- Harlow
- J&J Medical Gas Ltd
J&J Medical Gas Ltd
- Company number
- 16444141
- Incorporated
- 12 May 20251 year trading
- Registered office
- 53 Long Ley, Harlow, CM20 3NL
- Nature of business
- Plumbing, heat and air-conditioning installation; Other engineering activities
J&J Medical Gas Ltd is a 1-year-old private limited company registered in Harlow, company number 16444141, one of 97 plumbing and heating companies in Harlow. Its next accounts are due at Companies House on 12 February 2027, and its first CT600 is due at HMRC on 11 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Public contracts won
J&J Medical Gas Ltd has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Centre for Process Innovation Limited | Gas manifold regulators for laboratories | Ceiling, not shown | 21 Jan 2026 |
Where J&J Medical Gas Ltd is registered
The registered office is in Harlow (CM20), in the Harlow local authority area, East of England. Show CM20 3NL on a map.
Other trade companies in CM20
- Alpha Security, Auto Care and Facilities Maintenance LtdMechanics and garages
- VLD Partners LtdProperty developers
- Ata Pro LtdBuilders
- TLK Cons LtdSpecialist contractors
- Cavity Drain Pumps ( CDP ) LtdInstallers
- United Auto Solutions LtdMechanics and garages
- Ace Consolidate LimitedFinishing trades
- Wersatis & Global Parts LtdMotor traders
What happens if J&J Medical Gas Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 12 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 13 Feb 2027 to 12 Mar 2027 | £150 |
| 1 to 3 months late | 13 Mar 2027 to 12 May 2027 | £375 |
| 3 to 6 months late | 13 May 2027 to 12 Aug 2027 | £750 |
| More than 6 months late | From 13 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 16444141
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 2025 (1 year ago)
- Registered office
- 53 Long Ley, Harlow, CM20 3NL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other engineering activities (SIC 71129) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 11 May 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Harlow
Other active plumbing and heating companies registered in Harlow.
- J-Mec Contracts Ltd2020
- J.Cranfield Plumbing and Heating Ltd2020
- Jewel Property Maintenance Limited1999
- JP Heating and Plumbing Ltd2016
- JW Drains Limited2023
- Keatings Heating Limited2016
- Knight Installation Services Limited2017
- Knowles Property Maintenance Ltd2025
All plumbing and heating companies in Harlow · All trades in Harlow · Plumbers and heating engineers across the UK
Frequently asked questions
When are J&J Medical Gas Ltd's accounts due?
J&J Medical Gas Ltd's next accounts are due at Companies House by 12 February 2027 (in 122 days), covering the period to 31 May 2026.
When is J&J Medical Gas Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 11 May 2026, due by 11 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is J&J Medical Gas Ltd still trading?
J&J Medical Gas Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does J&J Medical Gas Ltd do?
J&J Medical Gas Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other engineering activities (SIC 71129).
How old is J&J Medical Gas Ltd?
J&J Medical Gas Ltd was incorporated on 12 May 2025, 1 year ago.
Has J&J Medical Gas Ltd won public sector contracts?
Yes. J&J Medical Gas Ltd has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from CENTRE FOR PROCESS INNOVATION LIMITED.
What is the penalty if J&J Medical Gas Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View J&J Medical Gas Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.