- Company number
- 12399898
- Incorporated
- 13 Jan 20206 years trading
- Registered office
- 91 Paul Street, London, EC2A 4NY
- Nature of business
- Construction of commercial buildings; Electrical installation; Plumbing, heat and air-conditioning installation; Other building completion and finishing
Mark Construction Ltd is a 6-year-old private limited company registered in London, company number 12399898, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £13K (+8.7%) on the year before, to £156K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2026 | £156K | £14K | 2 | ||
| 31 Jan 2025 | £143K | £26K | 2 | ||
| 31 Jan 2024 | £138K | £11K | 2 | ||
| 31 Jan 2023 | £137K | £30K | 2 | ||
| 31 Jan 2022 | £125K | £46K | 2 | ||
| 31 Jan 2021 | £45K | £21K | 1 |
Where Mark Construction Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NY on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Also registered at this address
6 other companies use the same registered office as Mark Construction Ltd.
- A D Environmental LimitedProperty developers
- Canalside Moorings LimitedCivil engineering
- Colton Cottages LimitedProperty developers
- Herbert Morrison House LimitedProperty developers
- Provent Consortium LtdProperty developers
- Urban Edge Central LimitedBuilders
What happens if Mark Construction 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 12399898
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 January 2020 (6 years ago)
- Registered office
- 91 Paul Street, London, EC2A 4NY
- Nature of business
- Construction of commercial buildings (SIC 41201)
Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other building completion and finishing (SIC 43390) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 18 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 London
Other active building contractors registered in London.
- Mark Hinchcliffe Contractors Limited2015
- Mark Oh Construction Ltd2026
- Mark Taylor London Limited2007
- Mark Tery Construction Ltd2023
- Mark&Dave Construction Ltd2022
- Marke& Victor Builders Ltd2025
- Markely Ltd2022
- Marko & Ko Ltd2018
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Mark Construction Ltd's accounts due?
Mark Construction Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Mark Construction Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Mark Construction Ltd still trading?
Mark Construction 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 Mark Construction Ltd do?
Mark Construction Ltd is registered under Construction of commercial buildings (SIC 41201); Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other building completion and finishing (SIC 43390).
How old is Mark Construction Ltd?
Mark Construction Ltd was incorporated on 13 January 2020, 6 years ago.
What is the penalty if Mark Construction 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 Mark Construction 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.