- Company number
- 17230610
- Incorporated
- 19 May 2026
- Registered office
- Index House, ST. Georges Lane, Ascot, SL5 7ET
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Urban planning and landscape architectural activities
O S R Construction & Groundworks Ltd is a newly incorporated private limited company registered in Ascot, company number 17230610, one of 39 building contractors in Ascot. Its next accounts are due at Companies House on 19 February 2028, and its first CT600 is due at HMRC on 18 May 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where O S R Construction & Groundworks Ltd is registered
The registered office is in Ascot (SL5), in the Windsor and Maidenhead local authority area, South East. Show SL5 7ET on a map.
Other trade companies in SL5
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- Drive Care Hub LtdMotor traders
- Berkshire Eco Clean LimitedCleaning companies
- Sunfix Solar LtdInstallers
- SRD Recoveries LtdMechanics and garages
- The Marlow Roofermann and Sons LimitedRoofers
- Painting Precision LtdPainters and decorators
- Loyal to the Soil LtdLandscapers and gardeners
Also registered at this address
12 other companies use the same registered office as O S R Construction & Groundworks Ltd.
- Autoport UK LimitedMotor traders
- Benjamin's Workshop LimitedJoiners and carpenters
- Berkshire Eco Clean LimitedCleaning companies
- Croft Homes Developments LimitedBuilders
- Houseline Construction LtdProperty developers
- Kitelands Property LimitedProperty developers
- Proflow Mechanical LtdPlumbers and heating engineers
- Rockhold Kew LimitedProperty developers
- Rockhold Walpole LimitedProperty developers
- Santa Maria Investments LimitedProperty developers
- The Revival Company (Southern) LtdFinishing trades
- Ylm Services LimitedFinishing trades
What happens if O S R Construction & Groundworks 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 19 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Feb 2028 to 19 Mar 2028 | £150 |
| 1 to 3 months late | 20 Mar 2028 to 19 May 2028 | £375 |
| 3 to 6 months late | 20 May 2028 to 19 Aug 2028 | £750 |
| More than 6 months late | From 20 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 2029 | 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
- 17230610
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 May 2026
- Registered office
- Index House, ST. Georges Lane, Ascot, SL5 7ET
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Urban planning and landscape architectural activities (SIC 71112) - Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
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 Ascot
Other active building contractors registered in Ascot.
- Paradon Properties Limited2013
- Permacoat Resin & Paving Ltd2023
- Precision Decor Limited2025
- Pure Projects Limited2021
- Renew Projects Limited2009
- Riverside Country Developments Limited2000
- Sisaan Construction Ltd2026
- The Ranch Projects Limited2025
All building contractors in Ascot · All trades in Ascot · Builders across the UK
Frequently asked questions
When are O S R Construction & Groundworks Ltd's accounts due?
O S R Construction & Groundworks Ltd's next accounts are due at Companies House by 19 February 2028 (in 494 days), covering the period to 31 May 2027.
When is O S R Construction & Groundworks Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 18 May 2027, due by 18 May 2028, and one for the period to 31 May 2027, due by 31 May 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is O S R Construction & Groundworks Ltd still trading?
O S R Construction & Groundworks 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 S R Construction & Groundworks Ltd do?
O S R Construction & Groundworks Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Urban planning and landscape architectural activities (SIC 71112).
How old is O S R Construction & Groundworks Ltd?
O S R Construction & Groundworks Ltd was incorporated on 19 May 2026, less than a year ago.
What is the penalty if O S R Construction & Groundworks 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 S R Construction & Groundworks 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.