- Companies
- Specialist contractors
- Downpatrick
- Callan Insulation Limited
Callan Insulation Limited
- Company number
- NI610366
- Incorporated
- 13 Dec 201114 years trading
- Registered office
- 76 Loughinisland Road, Downpatrick, Co. Down, BT30 8QH
- Nature of business
- Other specialised construction activities n.e.c.
Callan Insulation Limited is a 14-year-old private limited company registered in Downpatrick, company number NI610366, one of 14 specialist construction companies in Downpatrick. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £33K (+37.3%) on the year before, to £121K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £162K against £53K owed within a year: 3.1 times cover.
- 7 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £121K | £162K | £53K | 7 | |
| 31 Dec 2024 | £88K | £129K | £50K | 7 | |
| 31 Dec 2023 | £57K | £121K | £70K | 7 | |
| 31 Dec 2022 | £3,293 | £63K | £72K | 7 | |
| 31 Dec 2021 | £2,786 | £66K | £69K | 8 | |
| 31 Dec 2020 | £35K | £87K | £58K | 8 | |
| 31 Dec 2019 | £89K | £141K | £60K | 8 | |
| 31 Dec 2018 | £83K | £61K | £130K | £58K | 6 |
| 31 Dec 2017 | £116K | £59K | £144K | £48K | |
| 31 Dec 2016 | £105K | £65K | £166K | £71K |
Where Callan Insulation Limited is registered
The registered office is in Downpatrick (BT30), in the Newry, Mourne and Down local authority area, Northern Ireland. Show BT30 8QH on a map.
Other trade companies in BT30
- Ajc GRP LtdElectricians
- S J B Painting LtdPainters and decorators
- Corinas Cleaning LtdCleaning companies
- I P Recovery LimitedMechanics and garages
- Loughview Trading Co LimitedInstallers
- Titan Fabric and Surface LtdCleaning companies
- MCC&R LtdProperty developers
- Willow Cove Contracts LtdGroundworks and demolition
What happens if Callan Insulation 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- NI610366
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 December 2011 (14 years ago)
- Registered office
- 76 Loughinisland Road, Downpatrick, Co. Down, BT30 8QH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 13 December 2025
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 Downpatrick
Other active specialist construction companies registered in Downpatrick.
- Commercial Connections Limited2003
- G&N Bricklaying Ltd2015
- Nba Groundworks Ltd2024
- Novell Property and Gardens Ltd2023
- Plant Safety Ltd.2023
- PLC Construction Ltd2023
- Quinn Engineering Ltd2011
- SD Road Contracts Limited2011
All specialist construction companies in Downpatrick · All trades in Downpatrick · Specialist contractors across the UK
Frequently asked questions
When are Callan Insulation Limited's accounts due?
Callan Insulation Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Callan Insulation Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Callan Insulation Limited still trading?
Callan Insulation 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 Callan Insulation Limited do?
Callan Insulation Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Callan Insulation Limited?
Callan Insulation Limited was incorporated on 13 December 2011, 14 years ago.
What is the penalty if Callan Insulation 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 Callan Insulation 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.