- Companies
- Civil engineering
- MK Fire Stopping Ltd
MK Fire Stopping Ltd
- Company number
- 11806897
- Incorporated
- 5 Feb 20197 years trading
- Registered office
- Old Piggery Marks Hall, Marks Hall Lane, Margaret Roding, CM6 1QT
- Nature of business
- Construction of other civil engineering projects n.e.c.
MK Fire Stopping Ltd is a 7-year-old private limited company registered in Margaret Roding, company number 11806897, one of the UK's civil engineering contractors. Companies House shows its accounts as overdue: they were due on 30 November 2025.
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 down £2,631 (-26.9%) on the year before, to £7,167.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2020 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Feb 2024 | £7,167 | £26K | £0 | 1 | |
| 28 Feb 2023 | £9,798 | £35K | £17K | 1 | |
| 28 Feb 2022 | £2,107 | £6,990 | £35K | 1 | |
| 28 Feb 2021 | £1,836 | £37K | £14K | 1 | |
| 28 Feb 2020 | £1,732 | £12K | £13K | 1 |
Where MK Fire Stopping Ltd is registered
The registered office is in Margaret Roding (CM6), in the Uttlesford local authority area, East of England. Show CM6 1QT on a map.
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What happens if MK Fire Stopping Ltd files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2025 to 31 Dec 2025 | £150 |
| 1 to 3 months late | 1 Jan 2026 to 28 Feb 2026 | £375 |
| 3 to 6 months late | 1 Mar 2026 to 31 May 2026 | £750 |
| More than 6 months late | From 1 Jun 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2026 | £200 |
| 3 months late | 28 May 2026 | another £200 |
| 6 months late | 28 Aug 2026 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11806897
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 February 2019 (7 years ago)
- Registered office
- Old Piggery Marks Hall, Marks Hall Lane, Margaret Roding, CM6 1QT
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 29 February 2024
- Last confirmation statement
- 19 October 2025
- Previous names
- A.Keblys Contractors Limited (until 20 Oct 2025)
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies
Other active civil engineering contractors.
Frequently asked questions
When are MK Fire Stopping Ltd's accounts due?
MK Fire Stopping Ltd's accounts were due at Companies House on 30 November 2025 and the register shows them as overdue.
When is MK Fire Stopping Ltd's CT600 due?
The CT600 for the period to 28 February 2025 is due at HMRC by 28 February 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2025.
Is MK Fire Stopping Ltd still trading?
MK Fire Stopping Ltd is listed as active on the Companies House register (checked 13 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 MK Fire Stopping Ltd do?
MK Fire Stopping Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is MK Fire Stopping Ltd?
MK Fire Stopping Ltd was incorporated on 5 February 2019, 7 years ago.
What is the penalty if MK Fire Stopping 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 MK Fire Stopping Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.