- Company number
- 07625822
- Incorporated
- 9 May 201115 years trading
- Registered office
- Gordon House, 2 the Green, Westerham, Kent, TN16 1AS
- Nature of business
- Construction of commercial buildings; Other construction installation; Other building completion and finishing; Other specialised construction activities n.e.c.
Calmak Ltd is a 15-year-old private limited company registered in Westerham, company number 07625822, one of 49 building contractors in Westerham. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 Calmak 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 down £176K (-70.2%) on the year before, to £75K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- 8 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £75K | £193K | £235K | 8 | |
| 31 Mar 2025 | £251K | £542K | £638K | £251K | 8 |
| 31 Mar 2024 | £303K | £365K | £496K | £452K | 6 |
| 31 Mar 2023 | £286K | £123K | £297K | £261K | 6 |
| 31 Mar 2022 | £209K | £136K | £318K | £165K | 6 |
| 31 Mar 2021 | £16K | £77K | £170K | £90K | 6 |
| 31 Mar 2020 | £172K | £311K | £656K | £550K | 6 |
| 31 Mar 2019 | £106K | £126K | £205K | £117K | |
| 31 Mar 2018 | £16K | £118K | £249K | £322K | |
| 31 Mar 2017 | £74K | £94K | £135K | £149K |
Who runs and owns Calmak Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| C*** A*** | Director | May 2011 |
| C*** A*** | Secretary | May 2011 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| R*** F*** | Director | May 2011 | Feb 2026 |
People with significant control (2)
Charges (secured borrowing)
All 1 registered charge has been satisfied. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| A private lender | Satisfied Jan 2018 | Nov 2012 |
Where Calmak Ltd is registered
The registered office is in Westerham (TN16), in the Sevenoaks local authority area, South East. Show TN16 1AS on a map.
Other trade companies in TN16
- Fuller & Sons Carpentry LtdProperty developers
- Protech Air Solutions LtdPlumbers and heating engineers
- DW Construction (South) LimitedCivil engineering
- Danvic Facilities & Refurbishment LimitedSpecialist contractors
- The Plumbing Brothers LtdFinishing trades
- Beckenham Driveways and Patios LtdInstallers
- Christmas Tree Farm Outdoors Services LtdLandscapers and gardeners
- Jak Rolling LimitedPainters and decorators
Also registered at this address
1 other company uses the same registered office as Calmak Ltd.
- Cooling and Heating Technology LtdPlumbers and heating engineers
What happens if Calmak 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 07625822
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 2011 (15 years ago)
- Registered office
- Gordon House, 2 the Green, Westerham, Kent, TN16 1AS
- Nature of business
- Construction of commercial buildings (SIC 41201)
Other construction installation (SIC 43290)
Other building completion and finishing (SIC 43390)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 31 March (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 3 March 2026
- Charges (mortgages)
- 0 outstanding of 1 registered
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 Westerham
Other active building contractors registered in Westerham.
- Carter & Co Property Improvements Ltd2022
- Chancery Lane Contracts Ltd2025
- CM Brick Ltd2024
- Day Building and Landscaping Ltd2026
- Delta T Commissioning Ltd2025
- Diverse Stone Limited2013
- Dunrepo Limited2014
- Gem Professional Services Ltd2010
All building contractors in Westerham · All trades in Westerham · Builders across the UK
Frequently asked questions
When are Calmak Ltd's accounts due?
Calmak Ltd's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Calmak Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Calmak Ltd still trading?
Calmak 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 Calmak Ltd do?
Calmak Ltd is registered under Construction of commercial buildings (SIC 41201); Other construction installation (SIC 43290); Other building completion and finishing (SIC 43390); Other specialised construction activities n.e.c. (SIC 43999).
How old is Calmak Ltd?
Calmak Ltd was incorporated on 9 May 2011, 15 years ago.
Who runs Calmak Ltd?
Calmak Ltd has 1 active director, the longest-serving appointed in May 2011. Their names and service addresses are on the Companies House register.
Who owns Calmak Ltd?
2 people or companies have significant control of Calmak Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Calmak 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 Calmak 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.