- Companies
- Specialist contractors
- London
- CMC Design Engineering Ltd
CMC Design Engineering Ltd
- Company number
- 11360885
- Incorporated
- 14 May 20188 years trading
- Registered office
- 60 Carholme Road, London, SE23 2HS
- Nature of business
- Other specialised construction activities n.e.c.; Engineering related scientific and technical consulting activities
CMC Design Engineering Ltd is a 8-year-old private limited company registered in London, company number 11360885, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £1,199 (-1.6%) on the year before, to £72K.
- Net assets rose in 4 of 6 year-on-year comparisons on record.
- Current assets of £129K against £57K owed within a year: 2.3 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 May 2025 | £72K | £124K | £129K | £57K | 1 |
| 31 May 2024 | £73K | £104K | £108K | £35K | 1 |
| 31 May 2023 | £45K | £105K | £105K | £60K | 1 |
| 31 May 2022 | £17K | £86K | £86K | £70K | 1 |
| 31 May 2021 | £16K | £58K | £62K | £47K | 1 |
| 31 May 2020 | £5,508 | £64K | £58K | 1 | |
| 31 May 2019 | £7,497 | £72K | £65K |
Where CMC Design Engineering Ltd is registered
The registered office is in London (SE23), in the Lewisham local authority area, London. Show SE23 2HS on a map.
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What happens if CMC Design Engineering 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 11360885
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 May 2018 (8 years ago)
- Registered office
- 60 Carholme Road, London, SE23 2HS
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 13 May 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- CMF Construction and Refurbishment Ltd2025
- CMG Building Ltd2015
- CML Sustain (Commissioning Management) Limited2009
- CML Sustain Management Limited2012
- CMLF Ltd2023
- CMP Construction Ltd2025
- CMPT Development Investment Limited2015
- CMS Konstruct Ltd2024
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are CMC Design Engineering Ltd's accounts due?
CMC Design Engineering Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is CMC Design Engineering Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is CMC Design Engineering Ltd still trading?
CMC Design Engineering 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 CMC Design Engineering Ltd do?
CMC Design Engineering Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Engineering related scientific and technical consulting activities (SIC 71122).
How old is CMC Design Engineering Ltd?
CMC Design Engineering Ltd was incorporated on 14 May 2018, 8 years ago.
What is the penalty if CMC Design Engineering 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 CMC Design Engineering 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.