- Company number
- 11197572
- Incorporated
- 9 Feb 20188 years trading
- Registered office
- Suite 1B Quadrant House North, 65 Croydon Road, Caterham, Surrey, CR3 6PB
- Nature of business
- Construction of commercial buildings
CNK Fire & Security Limited is a 8-year-old private limited company registered in Caterham, company number 11197572, one of 55 building contractors in Caterham. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £573K (+34.2%) on the year before, to £2.2M.
- Net assets rose in 6 of 6 year-on-year comparisons on record.
- Current assets of £2.8M against £519K owed within a year: 5.3 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 |
|---|---|---|---|---|---|
| 28 Feb 2025 | £2.2M | £2.8M | £2.8M | £519K | 0 |
| 29 Feb 2024 | £1.7M | £2.1M | £2.1M | £448K | 0 |
| 28 Feb 2023 | £1.5M | £1.9M | £1.9M | £467K | 0 |
| 28 Feb 2022 | £1M | £1.1M | £90K | 0 | |
| 28 Feb 2021 | £903K | £1.1M | £1.1M | £192K | 0 |
| 29 Feb 2020 | £504K | £665K | £665K | £161K | 0 |
| 28 Feb 2019 | £166K | £240K | £74K |
Where CNK Fire & Security Limited is registered
The registered office is in Caterham (CR3), in the Tandridge local authority area, South East. Show CR3 6PB on a map.
Other trade companies in CR3
- Epw Group (London) LtdCleaning companies
- Limitless Flooring LtdFloor and wall tilers
- 5 Star Renovation LtdFinishing trades
- Moncur Heating LimitedPlumbers and heating engineers
- Rayce Projects LtdProperty developers
- DDB Building LtdFinishing trades
- Eljayar LimitedLandscapers and gardeners
- Apex Scaffold Services LtdScaffolders
Shared registered office
61 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 CNK Fire & Security 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11197572
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 February 2018 (8 years ago)
- Registered office
- Suite 1B Quadrant House North, 65 Croydon Road, Caterham, Surrey, CR3 6PB
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 8 February 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Caterham
Other active building contractors registered in Caterham.
- Complete Construction South East Ltd2020
- Cornerstone Build South East Limited2026
- D.L.Gillam Quality 1ST Ltd2026
- Dansk Construction Limited2015
- Denbury Construction Ltd2024
- DVH Construction Ltd2020
- Elgreko Adi Ltd2026
- Er Building Construction Ltd2021
All building contractors in Caterham · All trades in Caterham · Builders across the UK
Frequently asked questions
When are CNK Fire & Security Limited's accounts due?
CNK Fire & Security Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is CNK Fire & Security Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is CNK Fire & Security Limited still trading?
CNK Fire & Security 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 CNK Fire & Security Limited do?
CNK Fire & Security Limited is registered under Construction of commercial buildings (SIC 41201).
How old is CNK Fire & Security Limited?
CNK Fire & Security Limited was incorporated on 9 February 2018, 8 years ago.
What is the penalty if CNK Fire & Security 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 CNK Fire & Security 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.