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  4. Dark Carbon Limited

Dark Carbon Limited

ActiveMicro-entity accountsProperty developersWilmslow
Company number
05348987
Incorporated
1 Feb 200521 years trading
Registered office
Suite 234 Courthill House, 60 Water Lane, Wilmslow, Cheshire, SK9 5AJ
Nature of business
Development of building projects
Accounts due in
48 days
30 Nov 2026
Net assets
£660▲
+600.0% on the year before
Employees
0
Average during the year
From the Companies House register, 1 Oct 2026

Dark Carbon Limited is a 21-year-old private limited company registered in Wilmslow, company number 05348987, one of 96 property development companies in Wilmslow. 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.

Accounts due
30 Nov 2026
in 48 days
For the period to 28 Feb 2026
CT600 due
28 Feb 2027
in 138 days
Period 1 Mar 2025 to 28 Feb 2026
Corporation tax payment
1 Dec 2026
in 49 days
9 months and 1 day after the period end
Confirmation statement
13 May 2027
in 212 days
Last made up to 29 Apr 2026

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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 £792 (+600%) on the year before, to £660.
  • Net assets rose in 5 of 9 year-on-year comparisons on record.
  • Current assets of £37K against £4,306 owed within a year: 8.6 times cover.
  • No employees reported for the latest year (directors are often not counted as employees).
  • Balance sheets on record for 10 years, 2016 to 2025.

Net assets by year

Net assets at each year end, 2016 to 2025£0£50029 February 2016: net assets £2£2201628 February 2017: net assets £2£2201728 February 2018: net assets £2£2201828 February 2019: net assets £2£2201929 February 2020: net assets £20£20202028 February 2021: net assets £811£811202128 February 2022: net assets £814£814202228 February 2023: net assets -£138-£138202329 February 2024: net assets -£132-£132202428 February 2025: net assets £660£6602025
Net assets at each year end, 2016 to 2025£0£50029 February 2016: net assets £2£2'1628 February 2017: net assets £2£2'1728 February 2018: net assets £2£2'1828 February 2019: net assets £2£2'1929 February 2020: net assets £20£20'2028 February 2021: net assets £811£811'2128 February 2022: net assets £814£814'2228 February 2023: net assets -£138-£138'2329 February 2024: net assets -£132-£132'2428 February 2025: net assets £660£660'25
Year endNet assetsCashCurrent assetsOwed within a yearEmployees
28 Feb 2025£660£37K£4,3060
29 Feb 2024-£132£38K£8660
28 Feb 2023-£138£42K0
28 Feb 2022£814£48K£49K£3580
28 Feb 2021£811£50K£51K£6670
29 Feb 2020£20£242£2220
28 Feb 2019£2£2
28 Feb 2018£2£2
28 Feb 2017£2£2
29 Feb 2016£2£2

Where Dark Carbon Limited is registered

Dark Carbon Limited's registered office on a map of the UK

The registered office is in Wilmslow (SK9), in the Cheshire East local authority area, North West. Show SK9 5AJ on a map.

Other trade companies in SK9

What happens if Dark Carbon 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 HouseAccounts deliveredPenalty
Up to 1 month late1 Dec 2026 to 31 Dec 2026£150
1 to 3 months late1 Jan 2027 to 28 Feb 2027£375
3 to 6 months late1 Mar 2027 to 31 May 2027£750
More than 6 months lateFrom 1 Jun 2027£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Mar 2027£200
3 months late28 May 2027another £200
6 months late28 Aug 2027HMRC estimates the tax and adds 10% of the unpaid tax
12 months late28 Feb 2028another 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
05348987
Status
Active
Company type
Private limited company
Incorporated
1 February 2005 (21 years ago)
Registered office
Suite 234 Courthill House, 60 Water Lane, Wilmslow, Cheshire, SK9 5AJ
Nature of business
Development of building projects (SIC 41100)
Year end
28 February (accounting reference date)
Accounts type
Micro-entity
Last accounts made up to
28 February 2025
Last confirmation statement
29 April 2026
Previous names
Aig Engineering UK Limited (until 16 Apr 2024)
Bike & Kayak Limited (until 24 May 2016)
Blackheath Contractors Limited (until 11 May 2012)

Filing notes for property development companies

Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.

Similar companies in Wilmslow

Other active property development companies registered in Wilmslow.

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Frequently asked questions

When are Dark Carbon Limited's accounts due?

Dark Carbon 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 Dark Carbon 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 Dark Carbon Limited still trading?

Dark Carbon 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 Dark Carbon Limited do?

Dark Carbon Limited is registered under Development of building projects (SIC 41100).

How old is Dark Carbon Limited?

Dark Carbon Limited was incorporated on 1 February 2005, 21 years ago.

What is the penalty if Dark Carbon 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 Dark Carbon Limited on Companies House for filed documents, officers and the full history.

Report an error on this page

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.

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