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- Atomic Automation Ltd
Company profile · Specialist contractors
Atomic Automation Ltd
Atomic Automation Ltd is a 12-year-old private limited company registered in London, company number 09162891, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 August 2025, as filed at Companies House.
Atomic Automation Ltd over the years
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 £164K (+405.5%) on the year before, to £204K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £326K against £132K owed within a year: 2.5 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 Aug 2025 | £204K | £326K | £132K | 1 | |
| 31 Aug 2024 | £40K | £77K | £29K | 1 | |
| 31 Aug 2023 | £23K | £65K | £23K | 1 | |
| 31 Aug 2022 | £24K | £79K | £25K | 1 | |
| 31 Aug 2021 | £52K | £69K | £21K | 1 | |
| 31 Aug 2020 | £52K | £69K | £21K | 1 | |
| 31 Aug 2019 | £35K | £48K | £19K | 1 | |
| 31 Aug 2018 | £46K | £57K | £18K | ||
| 31 Aug 2017 | £50K | £73K | £31K | ||
| 31 Aug 2016 | £31K | £39K | £57K | £34K |
Where Atomic Automation Ltd is registered
The registered office is in London (N13), in the Enfield local authority area, London. Show N13 4FG on a map.
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What happens if Atomic Automation 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 09162891
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 August 2014 (12 years ago)
- Registered office
- Prime Apartments, 483 Green Lanes, London, N13 4FG
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 5 August 2026
- Previous names
- Green Building Automation Limited (until 9 Jun 2015)
Green Building Controls Limited (until 7 Aug 2014)
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.
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Other active specialist construction companies registered in London.
- Atpc Hire & Sales Ltd2023
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- Aub Ltd2025
- Aubin Construction Ltd2025
- Audio Schemes Limited2013
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- Augmented Stone London Ltd2024
- Aurion+ Limited2023
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Frequently asked questions
When are Atomic Automation Ltd's accounts due?
Atomic Automation Ltd's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Atomic Automation Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Atomic Automation Ltd still trading?
Atomic Automation 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 Atomic Automation Ltd do?
Atomic Automation Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Atomic Automation Ltd?
Atomic Automation Ltd was incorporated on 5 August 2014, 12 years ago.
What is the penalty if Atomic Automation 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 Atomic Automation 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.