- Companies
- Specialist contractors
- Isleworth
- Onesite Ltd
Onesite Ltd
- Company number
- 08998012
- Incorporated
- 15 Apr 201412 years trading
- Registered office
- 23 Worple Avenue, Isleworth, TW7 7JJ
- Nature of business
- Other specialised construction activities n.e.c.; Other engineering activities
Onesite Ltd is a 12-year-old private limited company registered in Isleworth, company number 08998012, one of 25 specialist construction companies in Isleworth. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 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 up £19K (+417.1%) on the year before, to £14K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- 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 |
|---|---|---|---|---|---|
| 30 Apr 2026 | £14K | £8,062 | £22K | 2 | |
| 30 Apr 2025 | -£4,436 | £50 | £4,486 | 2 | |
| 30 Apr 2024 | £4,040 | £4,040 | 2 | ||
| 30 Apr 2023 | £25K | £25K | 2 | ||
| 30 Apr 2022 | £45K | £45K | 2 | ||
| 30 Apr 2021 | £70K | £73K | 2 | ||
| 30 Apr 2020 | £79K | £87K | £8,435 | 1 | |
| 30 Apr 2019 | £63K | £81K | £18K | 1 | |
| 30 Apr 2018 | £45K | £59K | £64K | £20K | |
| 30 Apr 2017 | £23K | £33K | £9,967 |
Who runs and owns Onesite Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| P*** T*** | Director | Apr 2014 |
People with significant control (2)
Where Onesite Ltd is registered
The registered office is in Isleworth (TW7), in the Hounslow local authority area, London. Show TW7 7JJ on a map.
Other trade companies in TW7
- Pracom LtdMachinery repair and installation
- V&R Construction Group LtdBuilders
- Gio Construction LimitedBuilders
- S & H Bodywork LtdMechanics and garages
- KS Garage Isleworth LtdMotor traders
- C Wiseman Services LtdCleaning companies
- Avenida Developments LtdProperty developers
- Courtesy Cars Group UK LtdMotor traders
Also registered at this address
1 other company uses the same registered office as Onesite Ltd.
- Sami LimitedSpecialist contractors
What happens if Onesite 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 31 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 08998012
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 April 2014 (12 years ago)
- Registered office
- 23 Worple Avenue, Isleworth, TW7 7JJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Other engineering activities (SIC 71129) - Year end
- 30 April (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 15 April 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 Isleworth
Other active specialist construction companies registered in Isleworth.
- Pmgranite Ltd2014
- Rack Services Ltd2026
- Samfix Ltd2021
- Sami Limited2003
- Sava Construction Services Ltd2018
- Simplyspaces Ltd2022
- Sun Engineering Group Ltd2021
- TMM Design & Project Management Services Limited2020
All specialist construction companies in Isleworth · All trades in Isleworth · Specialist contractors across the UK
Frequently asked questions
When are Onesite Ltd's accounts due?
Onesite Ltd's next accounts are due at Companies House by 31 January 2028 (in 476 days), covering the period to 30 April 2027.
When is Onesite Ltd's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is Onesite Ltd still trading?
Onesite 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 Onesite Ltd do?
Onesite Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Other engineering activities (SIC 71129).
How old is Onesite Ltd?
Onesite Ltd was incorporated on 15 April 2014, 12 years ago.
Who runs Onesite Ltd?
Onesite Ltd has 1 active director, the longest-serving appointed in Apr 2014. Their names and service addresses are on the Companies House register.
Who owns Onesite Ltd?
2 people or companies have significant control of Onesite Ltd: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Onesite 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 Onesite 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.