- Companies
- Machinery repair and installation
- Darlington
- Acorn Alarms Ltd
Acorn Alarms Ltd
- Company number
- 06448995
- Incorporated
- 10 Dec 200718 years trading
- Registered office
- 43 Coniscliffe Road, Darlington, County Durham, DL3 7EH
- Nature of business
- Repair of electrical equipment
Acorn Alarms Ltd is a 18-year-old private limited company registered in Darlington, company number 06448995, one of 40 machinery repair and installation companies in Darlington. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £1,007 (+519.1%) on the year before, to £1,201.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £11K against £8,982 owed within a year: 1.2 times cover.
- 1 employee 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 May 2025 | £1,201 | £2,859 | £11K | £8,982 | 1 |
| 31 May 2024 | £194 | £2,228 | £11K | £9,551 | 1 |
| 31 May 2023 | £148 | £6,505 | £14K | £11K | 1 |
| 31 May 2022 | £347 | £3,313 | £12K | £8,147 | 1 |
| 31 May 2021 | £141 | £7,328 | £16K | £16K | 1 |
| 31 May 2020 | £160 | £2,330 | £10K | £9,999 | 1 |
| 31 May 2019 | £15K | £3,889 | £25K | £9,926 | 1 |
| 31 May 2018 | £493 | £5,384 | £8,327 | £9,656 | 1 |
| 31 May 2017 | £1,287 | £4,570 | £7,638 | £8,236 | |
| 31 May 2016 | £1,659 | £5,068 | £5,577 | £7,480 |
Who runs and owns Acorn Alarms Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| C*** N*** | Director | Dec 2007 |
| J*** N*** | Secretary | Dec 2007 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| Form 10 Secretaries Fd Ltd | Corporate Nominee Secretary | Dec 2007 | Dec 2007 |
| Form 10 Directors Fd Ltd | Nominee director (company) | Dec 2007 | Dec 2007 |
Person with significant control
Where Acorn Alarms Ltd is registered
The registered office is in Darlington (DL3), in the Darlington local authority area, North East. Show DL3 7EH on a map.
Other trade companies in DL3
- Shine With Helen LtdCleaning companies
- RJB Consultants LtdInstallers
- Garry's Car Valeting LtdCleaning companies
- Go Elite Cleaning Services LtdCleaning companies
- BGP Property LtdProperty developers
- Frontier Energy Services LtdPlumbers and heating engineers
- Andrew Morgan Joinery LtdJoiners and carpenters
- Aburns Engineering LtdBuilders
Shared registered office
32 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 Acorn Alarms 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 06448995
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 December 2007 (18 years ago)
- Registered office
- 43 Coniscliffe Road, Darlington, County Durham, DL3 7EH
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 1 November 2025
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Darlington
Other active machinery repair and installation companies registered in Darlington.
- Alisher Electricians Limited2024
- Amk HGV Ltd2025
- Amtech Offshore Ltd2025
- Anti-Corrosion Solutions Limited2025
- Arg Coatings Ltd2023
- Bignall Group Ltd1976
- Bladestar Renewables Ltd2019
- Chain and Sprocket Ltd2020
All machinery repair and installation companies in Darlington · All trades in Darlington · Machinery repair and installation across the UK
Frequently asked questions
When are Acorn Alarms Ltd's accounts due?
Acorn Alarms Ltd's next accounts are due at Companies House by 28 February 2027 (in 138 days), covering the period to 31 May 2026.
When is Acorn Alarms Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Acorn Alarms Ltd still trading?
Acorn Alarms 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 Acorn Alarms Ltd do?
Acorn Alarms Ltd is registered under Repair of electrical equipment (SIC 33140).
How old is Acorn Alarms Ltd?
Acorn Alarms Ltd was incorporated on 10 December 2007, 18 years ago.
Who runs Acorn Alarms Ltd?
Acorn Alarms Ltd has 1 active director, the longest-serving appointed in Dec 2007. Their names and service addresses are on the Companies House register.
Who owns Acorn Alarms Ltd?
One person or company has significant control of Acorn Alarms Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Acorn Alarms 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 Acorn Alarms 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.