- Company number
- 11245357
- Incorporated
- 9 Mar 20188 years trading
- Registered office
- O-I Building First Floor, the West Wing, Edinburgh Way, Harlow, Essex, CM20 2DB
- Nature of business
- Construction of commercial buildings
C & K Installations Limited is a 8-year-old private limited company registered in Harlow, company number 11245357, one of 223 building contractors in Harlow. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 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 down £29K (-33%) on the year before, to -£117K.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £46K against £177K owed within a year: 0.3 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£117K | £46K | £177K | 1 | |
| 31 Mar 2024 | -£88K | £31K | £138K | 1 | |
| 31 Mar 2023 | -£41K | £36K | £93K | 1 | |
| 31 Mar 2022 | -£21K | £46K | £72K | 1 | |
| 31 Mar 2021 | -£31K | £30K | £60K | 1 | |
| 31 Mar 2020 | £1,323 | £41K | £37K | 1 | |
| 31 Mar 2019 | £29K | £49K | £18K | 0 |
Where C & K Installations Limited is registered
The registered office is in Harlow (CM20), in the Harlow local authority area, East of England. Show CM20 2DB on a map.
Other trade companies in CM20
- Alpha Security, Auto Care and Facilities Maintenance LtdMechanics and garages
- VLD Partners LtdProperty developers
- Ata Pro LtdBuilders
- TLK Cons LtdSpecialist contractors
- Cavity Drain Pumps ( CDP ) LtdInstallers
- United Auto Solutions LtdMechanics and garages
- Ace Consolidate LimitedFinishing trades
- Wersatis & Global Parts LtdMotor traders
Shared registered office
46 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 C & K Installations 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 11245357
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 March 2018 (8 years ago)
- Registered office
- O-I Building First Floor, the West Wing, Edinburgh Way, Harlow, Essex, CM20 2DB
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 8 March 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 Harlow
Other active building contractors registered in Harlow.
- C'S Ideal Builders Limited2023
- Chingford Home Improvements Ltd2024
- Chris Build Limited2024
- Cliffton Maintenance Ltd2026
- Costan Construction Ltd2025
- Cozdan Construction Ltd2016
- Creed Brickwork Ltd2026
- Cris Construction Ltd2016
All building contractors in Harlow · All trades in Harlow · Builders across the UK
Frequently asked questions
When are C & K Installations Limited's accounts due?
C & K Installations Limited's next accounts are due at Companies House by 29 December 2026 (in 77 days), covering the period to 29 March 2026.
When is C & K Installations Limited's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is C & K Installations Limited still trading?
C & K Installations 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 C & K Installations Limited do?
C & K Installations Limited is registered under Construction of commercial buildings (SIC 41201).
How old is C & K Installations Limited?
C & K Installations Limited was incorporated on 9 March 2018, 8 years ago.
What is the penalty if C & K Installations 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 C & K Installations 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.