- Companies
- Specialist contractors
- Doncaster
- Co Site Services Ltd
Co Site Services Ltd
- Company number
- 11691031
- Incorporated
- 22 Nov 20187 years trading
- Registered office
- 11 Bradford Row, Doncaster, DN1 3NF
- Nature of business
- Other specialised construction activities n.e.c.
Co Site Services Ltd is a 7-year-old private limited company registered in Doncaster, company number 11691031, one of 187 specialist construction companies in Doncaster. Its next accounts are due at Companies House on 30 November 2026, and its first CT600 is due at HMRC on 30 November 2026.
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 £4,374 (-18.8%) on the year before, to £19K.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £28K against £9,898 owed within a year: 2.8 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £19K | £28K | £9,898 | 2 | |
| 30 Nov 2023 | £23K | £27K | £7,037 | 2 | |
| 30 Nov 2022 | £53K | £92K | £46K | 1 | |
| 30 Nov 2021 | £41K | £61K | £29K | 1 | |
| 30 Nov 2020 | £19K | £22K | £15K | 1 | |
| 30 Nov 2019 | £9,813 | £21K | £11K | 1 |
Where Co Site Services Ltd is registered
The registered office is in Doncaster (DN1), in the Doncaster local authority area, Yorkshire and The Humber. Show DN1 3NF on a map.
Other trade companies in DN1
- Nacu Trans LtdMechanics and garages
- Highwind Developments LimitedFinishing trades
- Adzare Service LtdMechanics and garages
- Sukaj Construction LtdPlasterers
- Tobityres LimitedMechanics and garages
- Firmont Homes LtdBuilders
- Callerton Autos LtdMotor traders
- S & A Motor Vehicles LimitedMotor traders
Also registered at this address
23 other companies use the same registered office as Co Site Services Ltd.
- Adt Joinery LtdJoiners and carpenters
- Alpha Development Management Solutions LtdProperty developers
- Blansco LtdProperty developers
- Claylane Brickwork LimitedBuilders
- Claylane Construction LtdBuilders
- Doncaster Groundworks & Reinforcements LtdCivil engineering
- G I Fabrication (Doncaster) LtdSpecialist contractors
- Ground-Tec Construction LtdCivil engineering
- K4 Construction LimitedBuilders
- Keys 123 LimitedMotor traders
- KH Plumbing & Heating Services LtdPlumbers and heating engineers
- KLC Plastering LtdPlasterers
- Lewis Brothers Electrical LimitedElectricians
- MRP Automotive (Yorkshire) LimitedMechanics and garages
- NM Property London LtdProperty developers
- One Stop Scaffolding & Netting Services LimitedScaffolders
- Planetalpha LimitedRoofers
- Poppies (U.K.) Development LimitedCleaning companies
- Sandall Heating Services LtdPlumbers and heating engineers
- Steel Construction (Yorkshire) LimitedCivil engineering
- Stollery Plant & Commercial Sales LimitedMotor traders
- Strand Multiserve LtdCleaning companies
- WMJ Drilling LtdPlumbers and heating engineers
What happens if Co Site Services 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11691031
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2018 (7 years ago)
- Registered office
- 11 Bradford Row, Doncaster, DN1 3NF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 23 January 2026
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 Doncaster
Other active specialist construction companies registered in Doncaster.
- Co.M.B Trading Ltd2024
- Conform Safety Management Ltd2007
- CR Plant Limited2021
- Craven Environmental Ltd2015
- CS Construction (Doncaster) Limited2025
- Cutting Edge Paving Limited2008
- CVN Ltd2019
- D Jani Construction Ltd2019
All specialist construction companies in Doncaster · All trades in Doncaster · Specialist contractors across the UK
Frequently asked questions
When are Co Site Services Ltd's accounts due?
Co Site Services Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Co Site Services 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 30 November 2025, due by 30 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Co Site Services Ltd still trading?
Co Site Services 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 Co Site Services Ltd do?
Co Site Services Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Co Site Services Ltd?
Co Site Services Ltd was incorporated on 22 November 2018, 7 years ago.
What is the penalty if Co Site Services 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 Co Site Services 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.