- Companies
- Plumbers and heating engineers
- London
- CJB Gas and Central Heating Services Ltd
CJB Gas and Central Heating Services Ltd
- Company number
- 11603364
- Incorporated
- 3 Oct 20188 years trading
- Registered office
- 16A Calthorpe Street, London, WC1X 0JS
- Nature of business
- Plumbing, heat and air-conditioning installation
CJB Gas and Central Heating Services Ltd is a 8-year-old private limited company registered in London, company number 11603364, one of 2,972 plumbing and heating companies in London. 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.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for CJB Gas and Central Heating Services LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 £8,945 (+45.5%) on the year before, to £29K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £39K against £5,856 owed within a year: 6.7 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 | £29K | £39K | £5,856 | 2 | |
| 31 Oct 2024 | £20K | £24K | £4,324 | 2 | |
| 31 Oct 2023 | £27K | £32K | £4,855 | 2 | |
| 31 Oct 2022 | £25K | £32K | £6,797 | 2 | |
| 31 Oct 2021 | £1,653 | £3,251 | £36K | £36K | 2 |
| 31 Oct 2020 | £626 | £3,333 | £22K | £23K | 2 |
| 31 Oct 2019 | £6,778 | £19K | £14K |
Where CJB Gas and Central Heating Services Ltd is registered
The registered office is in London (WC1X), in the Camden local authority area, London. Show WC1X 0JS on a map.
Other trade companies in WC1X
- Mbi Autos LtdMotor traders
- Property Plumbing LtdPlumbers and heating engineers
- Hane House LtdBuilders
- Ags - Atlas Global Services LimitedInstallers
- Desktop Lab LimitedRepair services
- Premium Building Solutions LtdBuilders
- Al Tasleem Roadside Assistance LtdMechanics and garages
- Nextgen Car Wash LtdMechanics and garages
What happens if CJB Gas and Central Heating 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
- 11603364
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 October 2018 (8 years ago)
- Registered office
- 16A Calthorpe Street, London, WC1X 0JS
- 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
- 2 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 London
Other active plumbing and heating companies registered in London.
- CK Heating & Plumbing Ltd2018
- CK Property Maintenance Ltd2017
- CL Plumbtech Ltd2023
- Claremore (Mechanical Services) Limited1973
- Clarkin Contracting Ltd2023
- CLC Maintenance Group Ltd2017
- Clean Filtration Limited2025
- Cleanline Engineering Co. Limited1981
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are CJB Gas and Central Heating Services Ltd's accounts due?
CJB Gas and Central Heating 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 CJB Gas and Central Heating 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 CJB Gas and Central Heating Services Ltd still trading?
CJB Gas and Central Heating 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 CJB Gas and Central Heating Services Ltd do?
CJB Gas and Central Heating Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is CJB Gas and Central Heating Services Ltd?
CJB Gas and Central Heating Services Ltd was incorporated on 3 October 2018, 8 years ago.
What is the penalty if CJB Gas and Central Heating 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 CJB Gas and Central Heating 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.