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- Mart Construction Ltd
Company profile · Finishing trades
Mart Construction Ltd
Mart Construction Ltd is a 8-year-old private limited company registered in Harrow, company number 11029691, one of 251 building finishing companies in Harrow. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Mart Construction Ltd over the years
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 £926 (-45%) on the year before, to £1,133.
- Net assets rose in 2 of 7 year-on-year comparisons on record.
- Current assets of £7,385 against £6,880 owed within a year: 1.1 times cover.
- 1 employee on average, down from 2 the year before.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £1,133 | £7,385 | £6,880 | 1 | |
| 31 Oct 2024 | £2,059 | £11K | £4,261 | 2 | |
| 31 Oct 2023 | -£13K | £1,367 | £6,779 | 4 | |
| 31 Oct 2022 | £763 | £14K | £2,735 | 4 | |
| 31 Oct 2021 | £169 | £20K | £6,048 | 4 | |
| 31 Oct 2020 | £381 | £20K | £5,237 | 3 | |
| 31 Oct 2019 | £5,053 | £9,707 | £4,654 | 2 | |
| 31 Oct 2018 | £18K | £24K | £5,487 |
Where Mart Construction Ltd is registered
The registered office is in Harrow (HA3), in the Harrow local authority area, London. Show HA3 9QE on a map.
Other trade companies in HA3
- M&M Team Solutions LimitedCleaning companies
- Asr234 LimitedCivil engineering
- Shine Bright With NV LtdMechanics and garages
- Direct Sparks LtdMachinery repair and installation
- Meral Decoration & Maintenance LtdPainters and decorators
- Add22 LtdCivil engineering
- Floyd Cleaners LimitedCleaning companies
- Amalia&Ioana LimitedBuilders
What happens if Mart 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 11029691
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 October 2017 (8 years ago)
- Registered office
- 40 Ruskin Gardens, Harrow, HA3 9QE
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 23 October 2025
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Harrow
Other active building finishing companies registered in Harrow.
- Master Plumbing Service Ltd2019
- Mature Services & Maintenance Ltd2010
- Mayfair Builders Ltd2018
- MCH Construction Ltd2016
- MG Construction Builder Services Ltd2026
- Middlesex Loft & Construction Limited2018
- Miguelito Construct Ltd2018
- Mirauta Ltd2011
All building finishing companies in Harrow · All trades in Harrow · Finishing trades across the UK
Frequently asked questions
When are Mart Construction Ltd's accounts due?
Mart Construction Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Mart Construction Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Mart Construction Ltd still trading?
Mart 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 Mart Construction Ltd do?
Mart Construction Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Mart Construction Ltd?
Mart Construction Ltd was incorporated on 24 October 2017, 8 years ago.
What is the penalty if Mart 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 Mart 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.