- Companies
- Specialist contractors
- London
- Mortise Concrete Limited
Mortise Concrete Limited
- Company number
- 09655457
- Incorporated
- 24 Jun 201511 years trading
- Registered office
- Unit 2, Hardess Street, Hardess Street, London, SE24 0HN
- Nature of business
- Other specialised construction activities n.e.c.
Mortise Concrete Limited is a 11-year-old private limited company registered in London, company number 09655457, one of 4,318 specialist construction companies in London. Companies House shows its accounts as overdue: they were due on 31 March 2018.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Where Mortise Concrete Limited is registered
The registered office is in London (SE24), in the Lambeth local authority area, London. Show SE24 0HN on a map.
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What happens if Mortise Concrete Limited files late
If the accounts reach Companies House today, the late filing penalty is £1,500 (£3,000 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2018 to 30 Apr 2018 | £150 |
| 1 to 3 months late | 1 May 2018 to 30 Jun 2018 | £375 |
| 3 to 6 months late | 1 Jul 2018 to 30 Sep 2018 | £750 |
| More than 6 months late | From 1 Oct 2018 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2018 | £200 |
| 3 months late | 30 Sep 2018 | another £200 |
| 6 months late | 30 Dec 2018 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2019 | 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
- 09655457
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 June 2015 (11 years ago)
- Registered office
- Unit 2, Hardess Street, Hardess Street, London, SE24 0HN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (small)
- Last accounts made up to
- 30 June 2016
- Last confirmation statement
- 20 June 2017
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.
- Mosaic Art Limited2009
- Mosely Mechanical Services Limited2023
- Mostro Development Limited2023
- MOT Training and Consulting Ltd2024
- Motives Group Limited2001
- Motril 2 Ltd2025
- Mould Solutions Ltd2024
- Movaite Ltd2020
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Mortise Concrete Limited's accounts due?
Mortise Concrete Limited's accounts were due at Companies House on 31 March 2018 and the register shows them as overdue.
When is Mortise Concrete Limited's CT600 due?
The CT600 for the period to 30 June 2017 is due at HMRC by 30 June 2018, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2018.
Is Mortise Concrete Limited still trading?
Mortise Concrete Limited is listed as active on the Companies House register (checked 13 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 Mortise Concrete Limited do?
Mortise Concrete Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mortise Concrete Limited?
Mortise Concrete Limited was incorporated on 24 June 2015, 11 years ago.
What is the penalty if Mortise Concrete 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 Mortise Concrete Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.