- Companies
- Specialist contractors
- Middlesbrough
- Keelan Cairnes Ltd
Keelan Cairnes Ltd
- Company number
- 16526061
- Incorporated
- 18 Jun 20251 year trading
- Registered office
- 11 Sudbury, Middlesbrough, TS8 9XZ
- Nature of business
- Other specialised construction activities n.e.c.
Keelan Cairnes Ltd is a 1-year-old private limited company registered in Middlesbrough, company number 16526061, one of 191 specialist construction companies in Middlesbrough. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 30 June 2026, as filed at Companies House.
Where Keelan Cairnes Ltd is registered
The registered office is in Middlesbrough (TS8), in the Middlesbrough local authority area, North East. Show TS8 9XZ on a map.
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What happens if Keelan Cairnes 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 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 16526061
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 June 2025 (1 year ago)
- Registered office
- 11 Sudbury, Middlesbrough, TS8 9XZ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 17 June 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 Middlesbrough
Other active specialist construction companies registered in Middlesbrough.
- Ker Site Services Ltd2024
- KLD Site Services Ltd2026
- Kmac Rigging Ltd2026
- L & L Developments of Teesside Ltd2022
- L A Construction (Ne) Ltd2023
- L M Patton Ltd2023
- L&L Cable Services Ltd2014
- Lee O'Rourke Heating Ltd2023
All specialist construction companies in Middlesbrough · All trades in Middlesbrough · Specialist contractors across the UK
Frequently asked questions
When are Keelan Cairnes Ltd's accounts due?
Keelan Cairnes Ltd's next accounts are due at Companies House by 31 March 2028 (in 535 days), covering the period to 30 June 2027.
When is Keelan Cairnes Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is Keelan Cairnes Ltd still trading?
Keelan Cairnes 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 Keelan Cairnes Ltd do?
Keelan Cairnes Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Keelan Cairnes Ltd?
Keelan Cairnes Ltd was incorporated on 18 June 2025, 1 year ago.
What is the penalty if Keelan Cairnes 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 Keelan Cairnes 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.