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- Sinclair Contracts Limited
Company profile · Specialist contractors
Sinclair Contracts Limited
Sinclair Contracts Limited is a newly incorporated private limited company registered in Kilmarnock, company number SC896567, one of 51 specialist construction companies in Kilmarnock. Its next accounts are due at Companies House on 21 April 2028, and its first CT600 is due at HMRC on 20 July 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Sinclair Contracts Limited is registered
The registered office is in Kilmarnock (KA1), in the East Ayrshire local authority area, Scotland. Show KA1 5LA on a map.
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- Cby Plumbing & Heating Solutions LtdPlumbers and heating engineers
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- Elevate Joinery & Conservatory Specialist Ayrshire LimitedJoiners and carpenters
Shared registered office
70 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Sinclair Contracts Limited 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 21 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 22 Apr 2028 to 21 May 2028 | £150 |
| 1 to 3 months late | 22 May 2028 to 21 Jul 2028 | £375 |
| 3 to 6 months late | 22 Jul 2028 to 21 Oct 2028 | £750 |
| More than 6 months late | From 22 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- SC896567
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 July 2026
- Registered office
- Unit 1 Simonsburn Road, Loreny Industrial Estate, Kilmarnock, KA1 5LA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 Kilmarnock
Other active specialist construction companies registered in Kilmarnock.
- Steve McCrae Decor Limited2016
- T M Architectural & Building Services Ltd2015
- TG Civils and Brickwork Ltd2023
- Third Alliance Group Limited2025
- Warrior Scotland Limited2000
- West Coast Contractors Limited1964
- Westray Services Limited2016
- Whiteford Contracts Limited2005
All specialist construction companies in Kilmarnock · All trades in Kilmarnock · Specialist contractors across the UK
Frequently asked questions
When are Sinclair Contracts Limited's accounts due?
Sinclair Contracts Limited's next accounts are due at Companies House by 21 April 2028 (in 557 days), covering the period to 31 July 2027.
When is Sinclair Contracts Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 20 July 2027, due by 20 July 2028, and one for the period to 31 July 2027, due by 31 July 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sinclair Contracts Limited still trading?
Sinclair Contracts Limited 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 Sinclair Contracts Limited do?
Sinclair Contracts Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sinclair Contracts Limited?
Sinclair Contracts Limited was incorporated on 21 July 2026, less than a year ago.
What is the penalty if Sinclair Contracts Limited 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 Sinclair Contracts Limited 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.