- Companies
- Builders
- New Eltham
- MK1 Construction Limited
MK1 Construction Limited
- Company number
- 11155348
- Incorporated
- 17 Jan 20188 years trading
- Registered office
- 77 Avery Hill Road, New Eltham, London, SE9 2BJ
- Nature of business
- Construction of domestic buildings
MK1 Construction Limited is a 8-year-old private limited company registered in New Eltham, company number 11155348, one of 7 building contractors in New Eltham. Its next accounts are due at Companies House on 31 January 2027, and its first CT600 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 £1,331 (+6.8%) on the year before, to -£18K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £35K against £39K owed within a year: 0.9 times cover.
- 2 employees 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 Jan 2025 | -£18K | £35K | £39K | 2 | |
| 31 Jan 2024 | -£20K | £1,863 | £47K | £62K | 2 |
| 31 Jan 2023 | £145 | £6,357 | £51K | £20K | 2 |
| 31 Jan 2022 | -£6,810 | £3,954 | £49K | £26K | 2 |
| 31 Jan 2021 | -£6,312 | £62K | £31K | 2 | |
| 31 Jan 2020 | -£7,226 | £1,786 | £13K | 2 | |
| 31 Jan 2019 | £9,206 | £18K | £14K |
Where MK1 Construction Limited is registered
The registered office is in New Eltham (SE9), in the Greenwich local authority area, London. Show SE9 2BJ on a map.
Other trade companies in SE9
- Valkor LtdBuilders
- M.A Developments (Ramsgate) LimitedProperty developers
- Sanchez Dec LtdPainters and decorators
- Yoi As LtdBuilders
- Interfix LtdSpecialist contractors
- South East London Locksmith LimitedSpecialist contractors
- S&O Maintenance LimitedInstallers
- Colvin Construction LimitedBuilders
Shared registered office
30 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 MK1 Construction 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 11155348
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 January 2018 (8 years ago)
- Registered office
- 77 Avery Hill Road, New Eltham, London, SE9 2BJ
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 16 January 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 New Eltham
Other active building contractors registered in New Eltham.
- Structural Build Ltd2019
- Swanley Contractors Limited2012
- Wembley Project Ltd2025
- Assured Bexley Brickwork Limited2022
- G & G Fixings Limited2003
- Joe IT All Limited2025
All building contractors in New Eltham · All trades in New Eltham · Builders across the UK
Frequently asked questions
When are MK1 Construction Limited's accounts due?
MK1 Construction Limited's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is MK1 Construction Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 January 2026, due by 31 January 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is MK1 Construction Limited still trading?
MK1 Construction 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 MK1 Construction Limited do?
MK1 Construction Limited is registered under Construction of domestic buildings (SIC 41202).
How old is MK1 Construction Limited?
MK1 Construction Limited was incorporated on 17 January 2018, 8 years ago.
What is the penalty if MK1 Construction 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 MK1 Construction 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.