- Company number
- 03473731
- Incorporated
- 1 Dec 199728 years trading
- Registered office
- 4TH Floor Great Suffolk Yard, 131 Great Suffolk Street, London, SE1 1PP
- Nature of business
- Construction of commercial buildings
MCM Architecture Ltd. is a 28-year-old private limited company registered in London, company number 03473731, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £423K (+103.7%) on the year before, to £832K.
- Net assets rose in 4 of 8 year-on-year comparisons on record.
- Current assets of £1.9M against £1.1M owed within a year: 1.7 times cover.
- 32 employees on average, down from 36 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £832K | £472K | £1.9M | £1.1M | 32 |
| 31 Dec 2024 | £408K | £348K | £1.4M | £1.1M | 36 |
| 31 Dec 2023 | £1M | £385K | £1.7M | £649K | 47 |
| 31 Dec 2022 | £1M | £423K | £1.7M | £576K | 43 |
| 31 Dec 2021 | £646K | £213K | £1.4M | £645K | 45 |
| 31 Dec 2020 | £998K | £703K | £1.5M | £510K | 60 |
| 31 Dec 2019 | £2M | £527K | £2.4M | £418K | 76 |
| 31 Dec 2018 | £2.9M | £405K | £3.5M | £740K | 65 |
| 30 Sep 2017 | £2.5M | £543K | £3.1M | £640K | 43 |
Where MCM Architecture Ltd. is registered
The registered office is in London (SE1), in the Southwark local authority area, London. Show SE1 1PP on a map.
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- Green Lane Cobham LtdProperty developers
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Also registered at this address
1 other company uses the same registered office as MCM Architecture Ltd..
- MCM Enterprise Holdings LtdProperty developers
What happens if MCM Architecture 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 03473731
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 December 1997 (28 years ago)
- Registered office
- 4TH Floor Great Suffolk Yard, 131 Great Suffolk Street, London, SE1 1PP
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 29 November 2025
- Charges (mortgages)
- 1 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 London
Other active building contractors registered in London.
- MCM Painting Ltd2025
- MCN Property Changes Limited2022
- McOnstruction Group Ltd2026
- MCP Construction and Plant Fire Ltd2026
- McRo Construction Ltd2025
- MCS Eagle Construction Ltd2025
- MCV Construction Limited2023
- McVicker Building Services (UK) Ltd2009
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Frequently asked questions
When are MCM Architecture Ltd.'s accounts due?
MCM Architecture Ltd.'s next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is MCM Architecture Ltd.'s CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is MCM Architecture Ltd. still trading?
MCM Architecture 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 MCM Architecture Ltd. do?
MCM Architecture Ltd. is registered under Construction of commercial buildings (SIC 41201).
How old is MCM Architecture Ltd.?
MCM Architecture Ltd. was incorporated on 1 December 1997, 28 years ago.
What is the penalty if MCM Architecture 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 MCM Architecture 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.