- Companies
- Installers
- London
- BJM Subsea Ltd
BJM Subsea Ltd
- Company number
- 17429603
- Incorporated
- 1 Sep 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Other construction installation
BJM Subsea Ltd is a newly incorporated private limited company registered in London, company number 17429603, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 1 June 2028, and its first CT600 is due at HMRC on 31 August 2028.
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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Who runs and owns BJM Subsea Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| S*** S*** | Director | Sep 2026 |
Person with significant control
Where BJM Subsea Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NA on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,510 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 BJM Subsea 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 1 June 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Jun 2028 to 1 Jul 2028 | £150 |
| 1 to 3 months late | 2 Jul 2028 to 1 Sep 2028 | £375 |
| 3 to 6 months late | 2 Sep 2028 to 1 Dec 2028 | £750 |
| More than 6 months late | From 2 Dec 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2028 | £200 |
| 3 months late | 30 Dec 2028 | another £200 |
| 6 months late | 30 Mar 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 2029 | 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
- 17429603
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 September 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- Bjones Wind Ltd2026
- BL Tower Crane Services Limited2025
- Black Beans Construction Ltd2025
- Black Dragon Building Limited2018
- Black Steel Installation Ltd2023
- Blazepro Ltd2025
- Blindbliss Limited2023
- Blockchain Improvement Ltd2018
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are BJM Subsea Ltd's accounts due?
BJM Subsea Ltd's next accounts are due at Companies House by 1 June 2028 (in 597 days), covering the period to 30 September 2027.
When is BJM Subsea 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 31 August 2027, due by 31 August 2028, and one for the period to 30 September 2027, due by 30 September 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is BJM Subsea Ltd still trading?
BJM Subsea 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 BJM Subsea Ltd do?
BJM Subsea Ltd is registered under Other construction installation (SIC 43290).
How old is BJM Subsea Ltd?
BJM Subsea Ltd was incorporated on 1 September 2026, less than a year ago.
Who runs BJM Subsea Ltd?
BJM Subsea Ltd has 1 active director, the longest-serving appointed in Sep 2026. Their names and service addresses are on the Companies House register.
Who owns BJM Subsea Ltd?
One person or company has significant control of BJM Subsea Ltd: an individual (owns 75% or more of the shares).
What is the penalty if BJM Subsea 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 BJM Subsea 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.