- Companies
- Specialist contractors
- London
- Demi Steel Fab Limited
Demi Steel Fab Limited
- Company number
- 16082755
- Incorporated
- 15 Nov 20241 year trading
- Registered office
- C/O Archer Associates Churchill House, 120 Bunns Lane, London, London, NW7 2AS
- Nature of business
- Other specialised construction activities n.e.c.
Demi Steel Fab Limited is a 1-year-old private limited company registered in London, company number 16082755, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 14 November 2026, and its first CT600 is due at HMRC on 14 November 2026.
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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Financial snapshot, 2025
From the balance sheet at 30 November 2025, as filed at Companies House.
Where Demi Steel Fab Limited is registered
The registered office is in London (NW7), in the Barnet local authority area, London. Show NW7 2AS on a map.
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Shared registered office
47 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 Demi Steel Fab Limited 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 14 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 15 Nov 2026 to 14 Dec 2026 | £150 |
| 1 to 3 months late | 15 Dec 2026 to 14 Feb 2027 | £375 |
| 3 to 6 months late | 15 Feb 2027 to 14 May 2027 | £750 |
| More than 6 months late | From 15 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Nov 2026 | £200 |
| 3 months late | 28 Feb 2027 | another £200 |
| 6 months late | 29 May 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 Nov 2027 | 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
- 16082755
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 November 2024 (1 year ago)
- Registered office
- C/O Archer Associates Churchill House, 120 Bunns Lane, London, London, NW7 2AS
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 29 November (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 14 November 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Dencoproperty Ltd2026
- Dendale Construction Limited2001
- Denham Sealants Limited2012
- Denholme Consultancy Limited2024
- Denis I&S Ltd2021
- Dennis Lock & Key Limited2005
- Denplex Arabia Ltd2025
- Dentalux Build Ltd2021
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Demi Steel Fab Limited's accounts due?
Demi Steel Fab Limited's next accounts are due at Companies House by 14 November 2026 (in 32 days), covering the period to 29 November 2025.
When is Demi Steel Fab Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 14 November 2025, due by 14 November 2026, and one for the period to 29 November 2025, due by 29 November 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is Demi Steel Fab Limited still trading?
Demi Steel Fab Limited 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 Demi Steel Fab Limited do?
Demi Steel Fab Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Demi Steel Fab Limited?
Demi Steel Fab Limited was incorporated on 15 November 2024, 1 year ago.
What is the penalty if Demi Steel Fab Limited 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 Demi Steel Fab Limited 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.