- Companies
- Specialist contractors
- Portsmouth
- 3554 Amun Ltd
3554 Amun Ltd
- Company number
- 15162810
- Incorporated
- 25 Sep 20233 years trading
- Registered office
- 350-352 London Road, London Road, Portsmouth, PO2 9JY
- Nature of business
- Other specialised construction activities n.e.c.; General cleaning of buildings; Landscape service activities
3554 Amun Ltd is a 3-year-old private limited company registered in Portsmouth, company number 15162810, one of 193 specialist construction companies in Portsmouth. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £17 (-0.1%) on the year before, to £17K.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £17K | £17K | £0 | 1 | |
| 30 Sep 2025 | £17K | £20K | £2,536 | 0 | |
| 30 Sep 2024 | £6,510 | £8,037 | £1,527 | 0 |
Where 3554 Amun Ltd is registered
The registered office is in Portsmouth (PO2), in the Portsmouth local authority area, South East. Show PO2 9JY on a map.
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Shared registered office
54 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 3554 Amun 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 15162810
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 September 2023 (3 years ago)
- Registered office
- 350-352 London Road, London Road, Portsmouth, PO2 9JY
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
General cleaning of buildings (SIC 81210)
Landscape service activities (SIC 81300) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 30 September 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 Portsmouth
Other active specialist construction companies registered in Portsmouth.
- A S Newton Tape and Jointing Specialists Limited2018
- A.D. Mechanical Services Limited2000
- A2B Rapid Response Groundworks and Landscaping Ltd2025
- A2B Rapid Response Property Services Ltd2026
- Aa Operations (South) Ltd2018
- Absolute Construction (Southern) Limited2022
- Ace Line Paving Limited2007
- Addob.Projects Ltd2023
All specialist construction companies in Portsmouth · All trades in Portsmouth · Specialist contractors across the UK
Frequently asked questions
When are 3554 Amun Ltd's accounts due?
3554 Amun Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is 3554 Amun Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is 3554 Amun Ltd still trading?
3554 Amun 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 3554 Amun Ltd do?
3554 Amun Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); General cleaning of buildings (SIC 81210); Landscape service activities (SIC 81300).
How old is 3554 Amun Ltd?
3554 Amun Ltd was incorporated on 25 September 2023, 3 years ago.
What is the penalty if 3554 Amun 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 3554 Amun 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.