- Companies
- Specialist contractors
- Grays
- Ac Insulation Ltd
Ac Insulation Ltd
- Company number
- 04709413
- Incorporated
- 24 Mar 200323 years trading
- Registered office
- Unit 50 Globe Industrial Estate, Rectory Road, Grays, RM17 6ST
- Nature of business
- Other specialised construction activities n.e.c.
Ac Insulation Ltd is a 23-year-old private limited company registered in Grays, company number 04709413, one of 119 specialist construction companies in Grays. 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 down £18K (-1.4%) on the year before, to £1.2M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £1.6M against £421K owed within a year: 3.8 times cover.
- 6 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 | £1.2M | £243K | £1.6M | £421K | 6 |
| 31 Dec 2024 | £1.2M | £275K | £1.5M | £301K | 6 |
| 31 Dec 2023 | £1.1M | £180K | £1.6M | £358K | 6 |
| 31 Dec 2022 | £724K | £54K | £1.5M | £250K | 6 |
| 31 Dec 2021 | £363K | £76K | £1.2M | £184K | 6 |
| 31 Dec 2020 | £304K | £407K | £1.5M | £183K | 6 |
| 31 Dec 2019 | £170K | £121K | £1.3M | £183K | 6 |
| 31 Dec 2018 | £1.2M | £154K | £1.6M | £385K | 7 |
| 31 Dec 2017 | £1.4M | £193K | £1.8M | £461K | 7 |
| 31 Aug 2016 | £1.3M | £594K | £1.7M |
Where Ac Insulation Ltd is registered
The registered office is in Grays (RM17), in the Thurrock local authority area, East of England. Show RM17 6ST on a map.
Other trade companies in RM17
- JR Home Improvement LtdBuilders
- United Engines LtdMechanics and garages
- Amitab Mechanic LtdMechanics and garages
- NHF Property Solutions LtdElectricians
- DMCG LtdElectricians
- Chris Bell Plumbing Services LtdPlumbers and heating engineers
- United Prompt Solutions LtdMachinery repair and installation
- Countryside Building & Developments LtdCivil engineering
What happens if Ac Insulation 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 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
- 04709413
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 March 2003 (23 years ago)
- Registered office
- Unit 50 Globe Industrial Estate, Rectory Road, Grays, RM17 6ST
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 21 March 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 Grays
Other active specialist construction companies registered in Grays.
- Ada Contracting Ltd2024
- Adeeo Ltd2019
- Advanced Cladding Ltd2024
- Alfa Drylining Ltd2022
- App Team Ltd2022
- Aqua Sealants Ltd2024
- Ar Creativity Ltd2025
- Asbestos Surveys Essex Limited2012
All specialist construction companies in Grays · All trades in Grays · Specialist contractors across the UK
Frequently asked questions
When are Ac Insulation Ltd's accounts due?
Ac Insulation Ltd's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Ac Insulation Ltd'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 Ac Insulation Ltd still trading?
Ac Insulation 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 Ac Insulation Ltd do?
Ac Insulation Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Ac Insulation Ltd?
Ac Insulation Ltd was incorporated on 24 March 2003, 23 years ago.
What is the penalty if Ac Insulation 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 Ac Insulation 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.