- Companies
- Plumbers and heating engineers
- Gainsborough
- CJS Plumbing Heating & Mechanical Services Ltd
CJS Plumbing Heating & Mechanical Services Ltd
- Company number
- 11624440
- Incorporated
- 16 Oct 20187 years trading
- Registered office
- 1 Engine House, Marshalls Yard, Gainsborough, Lincolnshire, DN21 2NA
- Nature of business
- Plumbing, heat and air-conditioning installation
CJS Plumbing Heating & Mechanical Services Ltd is a 7-year-old private limited company registered in Gainsborough, company number 11624440, one of 37 plumbing and heating companies in Gainsborough. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £4,487 (+9.3%) on the year before, to £53K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £77K against £40K owed within a year: 1.9 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £53K | £77K | £40K | 2 | |
| 31 Oct 2024 | £48K | £68K | £41K | 2 | |
| 31 Oct 2023 | £55K | £37K | £8,436 | 2 | |
| 31 Oct 2022 | £61K | £59K | £28K | 1 | |
| 31 Oct 2021 | £26K | £47K | £40K | 1 | |
| 31 Oct 2020 | £1,819 | £14K | £35K | 1 | |
| 31 Oct 2019 | £3,536 | £13K | £36K | 1 |
Where CJS Plumbing Heating & Mechanical Services Ltd is registered
The registered office is in Gainsborough (DN21), in the West Lindsey local authority area, East Midlands. Show DN21 2NA on a map.
Other trade companies in DN21
- The Car Buyer LtdMotor traders
- Craig Rudge Electrical LtdElectricians
- San San Properties & Developments LtdBuilders
- Pages Garage LtdMechanics and garages
- Elite Touch Home Cleaning LtdCleaning companies
- Gregelec LimitedElectricians
- DRM 2026 LimitedMotor traders
- Elite Carpet Care Gainsborough LtdCleaning companies
Shared registered office
58 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if CJS Plumbing Heating & Mechanical Services 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 11624440
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 October 2018 (7 years ago)
- Registered office
- 1 Engine House, Marshalls Yard, Gainsborough, Lincolnshire, DN21 2NA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 15 October 2025
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 Gainsborough
Other active plumbing and heating companies registered in Gainsborough.
- Climate Control Limited1996
- D Carlill Plumbing & Heating Limited2020
- D. Adams Plumbers Limited1965
- Desire Plumbing & Heating Ltd2023
- H. Lockwood & Son Limited2006
- Heat Source Innovation Ltd2025
- Jack Croule Plumbing Services Ltd2026
- Jeremy Hall (Plumber) Ltd2016
All plumbing and heating companies in Gainsborough · All trades in Gainsborough · Plumbers and heating engineers across the UK
Frequently asked questions
When are CJS Plumbing Heating & Mechanical Services Ltd's accounts due?
CJS Plumbing Heating & Mechanical Services Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is CJS Plumbing Heating & Mechanical Services Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is CJS Plumbing Heating & Mechanical Services Ltd still trading?
CJS Plumbing Heating & Mechanical Services 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 CJS Plumbing Heating & Mechanical Services Ltd do?
CJS Plumbing Heating & Mechanical Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CJS Plumbing Heating & Mechanical Services Ltd?
CJS Plumbing Heating & Mechanical Services Ltd was incorporated on 16 October 2018, 7 years ago.
What is the penalty if CJS Plumbing Heating & Mechanical Services 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 CJS Plumbing Heating & Mechanical Services 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.