- Companies
- Cleaning companies
- Southampton
- Atom Brothers Ltd
Atom Brothers Ltd
- Company number
- 14604216
- Incorporated
- 19 Jan 20233 years trading
- Registered office
- 8 Summit Way, Southampton, Hampshire, SO18 4ST
- Nature of business
- Other cleaning services
Atom Brothers Ltd is a 3-year-old private limited company registered in Southampton, company number 14604216, one of 274 cleaning companies in Southampton. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £708 (-105%) on the year before, to -£1,382.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | -£1,382 | £1,064 | 0 | ||
| 31 Jan 2024 | -£674 | £374 | 0 |
Where Atom Brothers Ltd is registered
The registered office is in Southampton (SO18), in the Southampton local authority area, South East. Show SO18 4ST on a map.
Other trade companies in SO18
- Nationwide Steelfixing LtdBuilders
- Terraline LimitedSpecialist contractors
- Omni Group Holdings LtdSpecialist contractors
- Zammit Property Developments LtdProperty developers
- Shotton Marine LtdMachinery repair and installation
- Amiri Mobile Mechanic LtdMechanics and garages
- Roofing Building & Maintenance LtdSpecialist contractors
- The Tidy Life LtdCleaning companies
What happens if Atom Brothers 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 14604216
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 January 2023 (3 years ago)
- Registered office
- 8 Summit Way, Southampton, Hampshire, SO18 4ST
- Nature of business
- Other cleaning services (SIC 81299)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 23 February 2026
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Southampton
Other active cleaning companies registered in Southampton.
- Austin Exterior Cleaning Ltd2024
- Barnes Window Cleaning (Commercial) Ltd2025
- Barnes Window Cleaning Ltd2023
- Bays Harbour Ltd2026
- Be Shiny Cleaning Services Ltd2018
- Be Sparkle Cleaning Ltd2025
- Belle Casa (Berkshire) Ltd2014
- Berkshire Cleaning Services Limited2010
All cleaning companies in Southampton · All trades in Southampton · Cleaning companies across the UK
Frequently asked questions
When are Atom Brothers Ltd's accounts due?
Atom Brothers Ltd's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Atom Brothers Ltd's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Atom Brothers Ltd still trading?
Atom Brothers 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 Atom Brothers Ltd do?
Atom Brothers Ltd is registered under Other cleaning services (SIC 81299).
How old is Atom Brothers Ltd?
Atom Brothers Ltd was incorporated on 19 January 2023, 3 years ago.
What is the penalty if Atom Brothers 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 Atom Brothers 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.