- Companies
- Finishing trades
- Birmingham
- O'Sullivan Infrastructure Solutions Limited
O'Sullivan Infrastructure Solutions Limited
- Company number
- 16618705
- Incorporated
- 31 Jul 20251 year trading
- Registered office
- 7 Rowney Croft, Birmingham, B28 0PL
- Nature of business
- Other building completion and finishing
O'Sullivan Infrastructure Solutions Limited is a 1-year-old private limited company registered in Birmingham, company number 16618705, one of 422 building finishing companies in Birmingham. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 30 July 2027.
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.
Is this your company?
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Where O'Sullivan Infrastructure Solutions Limited is registered
The registered office is in Birmingham (B28), in the Birmingham local authority area, West Midlands. Show B28 0PL on a map.
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- S Hollis Roofing and Sons LtdRoofers
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What happens if O'Sullivan Infrastructure Solutions Limited 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16618705
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 July 2025 (1 year ago)
- Registered office
- 7 Rowney Croft, Birmingham, B28 0PL
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 Birmingham
Other active building finishing companies registered in Birmingham.
- O.B. Home Improvements Limited2006
- Ocean Builders Limited2019
- Olivia Property and Landscaping Services Ltd2026
- Olivia Property Services Ltd2025
- P & P Sandhu Builders Ltd2019
- P & R Building & Roofing Services Ltd2021
- P Leech Limited2016
- P. Lovatt Construction Limited2014
All building finishing companies in Birmingham · All trades in Birmingham · Finishing trades across the UK
Frequently asked questions
When are O'Sullivan Infrastructure Solutions Limited's accounts due?
O'Sullivan Infrastructure Solutions Limited's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is O'Sullivan Infrastructure Solutions Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 July 2026, due by 30 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is O'Sullivan Infrastructure Solutions Limited still trading?
O'Sullivan Infrastructure Solutions Limited is listed as active on the Companies House register (checked 12 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'Sullivan Infrastructure Solutions Limited do?
O'Sullivan Infrastructure Solutions Limited is registered under Other building completion and finishing (SIC 43390).
How old is O'Sullivan Infrastructure Solutions Limited?
O'Sullivan Infrastructure Solutions Limited was incorporated on 31 July 2025, 1 year ago.
What is the penalty if O'Sullivan Infrastructure Solutions 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 O'Sullivan Infrastructure Solutions Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.