- Companies
- Specialist contractors
- Stockport
- C O'Sullivan Ltd
C O'Sullivan Ltd
- Company number
- 13210953
- Incorporated
- 18 Feb 20215 years trading
- Registered office
- 94 Compstall Road, Marple Bridge, Stockport, SK6 5HD
- Nature of business
- Other specialised construction activities n.e.c.
C O'Sullivan Ltd is a 5-year-old private limited company registered in Stockport, company number 13210953, one of 146 specialist construction companies in Stockport. Its next accounts are due at Companies House on 30 November 2027, and the CT600 for the period to 28 February 2027 is due at HMRC on 28 February 2028.
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 £11K (-67.8%) on the year before, to £5,259.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £33K against £34K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £5,259 | £8,283 | £33K | £34K | 1 |
| 28 Feb 2025 | £16K | £0 | £29K | £21K | 1 |
| 29 Feb 2024 | £59 | £270 | £18K | £29K | 1 |
| 28 Feb 2023 | £3,764 | £4,146 | £8,852 | £5,088 | 1 |
| 28 Feb 2022 | -£1,432 | £1,432 | 1 |
Where C O'Sullivan Ltd is registered
The registered office is in Stockport (SK6), in the Stockport local authority area, North West. Show SK6 5HD on a map.
Other trade companies in SK6
- TLT Construction Northwest LtdBuilders
- Ridgeline Roofing Manchester LimitedRoofers
- FTPG LimitedCleaning companies
- Pro Pressure Manchester LtdCleaning companies
- Ip Infrastructure & Engineering LtdCivil engineering
- Fixt Plumbing LtdPlumbers and heating engineers
- HB Living LtdProperty developers
- Stockport Suspended Ceilings LtdSpecialist contractors
What happens if C O'Sullivan 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 30 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2027 to 31 Dec 2027 | £150 |
| 1 to 3 months late | 1 Jan 2028 to 29 Feb 2028 | £375 |
| 3 to 6 months late | 1 Mar 2028 to 31 May 2028 | £750 |
| More than 6 months late | From 1 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 13210953
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 February 2021 (5 years ago)
- Registered office
- 94 Compstall Road, Marple Bridge, Stockport, SK6 5HD
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 14 November 2025
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 Stockport
Other active specialist construction companies registered in Stockport.
- Caldru Civils Limited2018
- Calibre Metalwork Limited2011
- Centre for Strategic and Technical Research Ltd2022
- Changing Doors Limited2000
- Cheshire Damp Proofing Limited2017
- Clark Construction (UK) Limited2014
- Clkll Ltd2026
- Coalwood Heating Centre Limited2007
All specialist construction companies in Stockport · All trades in Stockport · Specialist contractors across the UK
Frequently asked questions
When are C O'Sullivan Ltd's accounts due?
C O'Sullivan Ltd's next accounts are due at Companies House by 30 November 2027 (in 413 days), covering the period to 28 February 2027.
When is C O'Sullivan Ltd's CT600 due?
The CT600 for the period to 28 February 2027 is due at HMRC by 28 February 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2027.
Is C O'Sullivan Ltd still trading?
C O'Sullivan 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 C O'Sullivan Ltd do?
C O'Sullivan Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is C O'Sullivan Ltd?
C O'Sullivan Ltd was incorporated on 18 February 2021, 5 years ago.
What is the penalty if C O'Sullivan 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 C O'Sullivan 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.