- Company number
- 06509083
- Incorporated
- 19 Feb 200818 years trading
- Registered office
- Unit 9, Creekmouth Ind. Estate, 57 River Road, Barking, Essex, IG11 0DA
- Nature of business
- Construction of domestic buildings; Other construction installation
Thornco Co. Ltd is a 18-year-old private limited company registered in Barking, company number 06509083, one of 326 building contractors in Barking. 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 £18K (-27.8%) on the year before, to £46K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £55K against £36K owed within a year: 1.5 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £46K | £35K | £55K | £36K | 2 |
| 28 Feb 2025 | £64K | £48K | £55K | £14K | 2 |
| 29 Feb 2024 | £65K | £44K | £53K | £2,560 | 2 |
| 28 Feb 2023 | £82K | £64K | £88K | £24K | 2 |
| 28 Feb 2022 | £74K | £70K | £78K | £26K | 2 |
| 28 Feb 2021 | £65K | £68K | £73K | £35K | 2 |
| 28 Feb 2020 | £81K | £85K | £87K | £39K | 2 |
| 28 Feb 2019 | £89K | £66K | £72K | £23K | 2 |
| 28 Feb 2018 | £99K | £82K | £147K | £66K | 2 |
| 28 Feb 2017 | £63K | £59K | £102K | £61K | 2 |
Where Thornco Co. Ltd is registered
The registered office is in Barking (IG11), in the Barking and Dagenham local authority area, London. Show IG11 0DA on a map.
Other trade companies in IG11
- Handikeep LimitedJoiners and carpenters
- Bright2Shine LtdCleaning companies
- Fage Adviser LtdSpecialist contractors
- Slouy LtdRoofers
- MMG Corp LimitedMotor traders
- M&K Autocare LtdMechanics and garages
- Z & L Metal & Vehicle Global Trading LtdMotor traders
- Es Automotives LtdMotor traders
Also registered at this address
7 other companies use the same registered office as Thornco Co. Ltd.
- Coote Services (UK) LimitedInstallers
- I.T.R. Electrical Co. LimitedElectricians
- J.W. Grant (UK) Co. LtdMachinery repair and installation
- Merlin Mec LtdPlumbers and heating engineers
- R & S Cleaning Services LtdCleaning companies
- R.C. Surfacing Co. LtdCivil engineering
- Sovereign Liftrucks Sales LtdMachinery repair and installation
What happens if Thornco Co. 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
- 06509083
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 February 2008 (18 years ago)
- Registered office
- Unit 9, Creekmouth Ind. Estate, 57 River Road, Barking, Essex, IG11 0DA
- Nature of business
- Construction of domestic buildings (SIC 41202)
Other construction installation (SIC 43290) - Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 24 January 2026
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 Barking
Other active building contractors registered in Barking.
- Tobli Builders Ltd2020
- Toffee Group Ltd2024
- Toni Builder Ltd2024
- Top Brother's Group Ltd2021
- Top Quality Drylining Limited2024
- Topbuild Support Ltd2024
- TRC Drylining Ltd2019
- Trim-Art Pro Ltd2017
All building contractors in Barking · All trades in Barking · Builders across the UK
Frequently asked questions
When are Thornco Co. Ltd's accounts due?
Thornco Co. 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 Thornco Co. 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 Thornco Co. Ltd still trading?
Thornco Co. 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 Thornco Co. Ltd do?
Thornco Co. Ltd is registered under Construction of domestic buildings (SIC 41202); Other construction installation (SIC 43290).
How old is Thornco Co. Ltd?
Thornco Co. Ltd was incorporated on 19 February 2008, 18 years ago.
What is the penalty if Thornco Co. 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 Thornco Co. 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.