- Companies
- Finishing trades
- London
- O M & Sons Construction Ltd
O M & Sons Construction Ltd
- Company number
- 13147731
- Incorporated
- 20 Jan 20215 years trading
- Registered office
- 71-75 Shelton Street, London, WC2H 9JQ
- Nature of business
- Other building completion and finishing
O M & Sons Construction Ltd is a 5-year-old private limited company registered in London, company number 13147731, one of 3,947 building finishing companies in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £2,031 (-75.2%) on the year before, to £671.
- Net assets rose in 0 of 3 year-on-year comparisons on record.
- Current assets of £104K against £104K owed within a year: 1.0 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £671 | £104K | £104K | 2 | |
| 31 Mar 2024 | £2,702 | £64K | £62K | 1 | |
| 31 Mar 2023 | £17K | £26K | £26K | 1 | |
| 31 Mar 2022 | £54K | £91K | £38K | 2 |
Where O M & Sons Construction Ltd is registered
The registered office is in London (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
Other trade companies in WC2H
- Superclean Agency LtdCleaning companies
- Sal Cleaning LtdCleaning companies
- Cityshine Facilities Services LtdCleaning companies
- Pureoceanscleaning LtdCleaning companies
- Muca Property Group LimitedProperty developers
- E.L.G.G LtdJoiners and carpenters
- First Ascentia Integrated LtdCleaning companies
- Fixing London LtdSpecialist contractors
Shared registered office
4,529 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 O M & Sons 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 13147731
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 January 2021 (5 years ago)
- Registered office
- 71-75 Shelton Street, London, WC2H 9JQ
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 23 May 2026
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 London
Other active building finishing companies registered in London.
- O Mestre Marques Ltd2019
- O&K Interiors Ltd2021
- O'Neill Stonework and Restorations Limited2022
- O'Regan Cement Limited2008
- O'Riordan Mechanical Services Ltd2025
- O.H Property and Building Limited2025
- Oakley Wilsons Ltd2019
- Oakstone Projects Ltd2026
All building finishing companies in London · All trades in London · Finishing trades across the UK
Frequently asked questions
When are O M & Sons Construction Ltd's accounts due?
O M & Sons Construction Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is O M & Sons Construction Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is O M & Sons Construction Ltd still trading?
O M & Sons 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 O M & Sons Construction Ltd do?
O M & Sons Construction Ltd is registered under Other building completion and finishing (SIC 43390).
How old is O M & Sons Construction Ltd?
O M & Sons Construction Ltd was incorporated on 20 January 2021, 5 years ago.
What is the penalty if O M & Sons 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 O M & Sons 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.