- Company number
- SC610194
- Incorporated
- 8 Oct 20188 years trading
- Registered office
- 42 Glenramskill Avenue, Cumnock, KA18 1HX
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Construction of roads and motorways; Construction of other civil engineering projects n.e.c.
O'Kane Site Engineering Ltd is a 8-year-old private limited company registered in Cumnock, company number SC610194, one of 10 building contractors in Cumnock. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
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 £3,550 on the year before, to £3,468.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £20K against £12K owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £3,468 | £20K | £12K | 2 | |
| 31 Mar 2024 | -£82 | £27K | £20K | 2 | |
| 31 Oct 2022 | £854 | £51K | £51K | 2 | |
| 31 Oct 2021 | £588 | £28K | £29K | 2 | |
| 31 Oct 2020 | £41 | £18K | £7,815 | 2 | |
| 31 Oct 2019 | £362 | £9,056 | £9,418 | 2 |
Who runs and owns O'Kane Site Engineering Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| P*** O*** | Director | Oct 2018 |
Person with significant control
Where O'Kane Site Engineering Ltd is registered
The registered office is in Cumnock (KA18), in the East Ayrshire local authority area, Scotland. Show KA18 1HX on a map.
Other trade companies in KA18
- Sandglow Overland LtdMotor traders
- Scott Smith Joinery LtdJoiners and carpenters
- JSK Aviation Services LtdMachinery repair and installation
- Dempster Construction LimitedSpecialist contractors
- KM Vehicle Sales LtdMotor traders
- Gibby Groundworks LtdCivil engineering
- Volkstec (Ayr) LtdMechanics and garages
- Baird Welding and Mechanical LtdMachinery repair and installation
What happens if O'Kane Site Engineering 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- SC610194
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 October 2018 (8 years ago)
- Registered office
- 42 Glenramskill Avenue, Cumnock, KA18 1HX
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Construction of roads and motorways (SIC 42110)
Construction of other civil engineering projects n.e.c. (SIC 42990) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 7 October 2025
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 Cumnock
Other active building contractors registered in Cumnock.
- 2M Builders Limited2021
- Caldwell Sheeting Limited2021
- Campbell Homes (Sorn) Limited2021
- Charlesfort Developments Ltd2015
- FGH Steel Erecting and Cladding Limited2025
- Hill Plant Hire Construction Ltd2025
- Kings Homes Limited1992
- LB Scotland Limited2020
All building contractors in Cumnock · All trades in Cumnock · Builders across the UK
Frequently asked questions
When are O'Kane Site Engineering Ltd's accounts due?
O'Kane Site Engineering Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is O'Kane Site Engineering Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is O'Kane Site Engineering Ltd still trading?
O'Kane Site Engineering 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 O'Kane Site Engineering Ltd do?
O'Kane Site Engineering Ltd is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Construction of roads and motorways (SIC 42110); Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is O'Kane Site Engineering Ltd?
O'Kane Site Engineering Ltd was incorporated on 8 October 2018, 8 years ago.
Who runs O'Kane Site Engineering Ltd?
O'Kane Site Engineering Ltd has 1 active director, the longest-serving appointed in Oct 2018. Their names and service addresses are on the Companies House register.
Who owns O'Kane Site Engineering Ltd?
One person or company has significant control of O'Kane Site Engineering Ltd: an individual (owns 75% or more of the shares).
What is the penalty if O'Kane Site Engineering 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 O'Kane Site Engineering 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.