- Companies
- Facilities management
- South Croydon
- Neptunium Developments Ltd
Neptunium Developments Ltd
- Company number
- 09389405
- Incorporated
- 14 Jan 201511 years trading
- Registered office
- 63 Princes Avenue, Sanderstead, South Croydon, Surrey, CR2 9BF
- Nature of business
- Combined facilities support activities
Neptunium Developments Ltd is a 11-year-old private limited company registered in South Croydon, company number 09389405, one of 11 facilities management companies in South Croydon. 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 £28K (-79.7%) on the year before, to £7,236.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £72K against £90K owed within a year: 0.8 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 Jan 2025 | £7,236 | £72K | £90K | 1 | |
| 31 Jan 2024 | £36K | £204K | £168K | 1 | |
| 31 Jan 2023 | £162 | £68K | £77K | 1 | |
| 31 Jan 2022 | £271 | £106K | £94K | 1 | |
| 31 Jan 2021 | £3,390 | £169K | £140K | 1 | |
| 31 Jan 2020 | £4,131 | £10 | £85K | 0 | |
| 31 Jan 2019 | £1 | ||||
| 31 Jan 2018 | £0 | ||||
| 31 Jan 2017 | £1 | ||||
| 31 Jan 2016 | £18 | £18 |
Who runs and owns Neptunium Developments Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| M*** M*** | Director | Jan 2015 |
Person with significant control
Where Neptunium Developments Ltd is registered
The registered office is in South Croydon (CR2), in the Croydon local authority area, London. Show CR2 9BF on a map.
Other trade companies in CR2
- Noviolux LtdPainters and decorators
- Ottorigo LimitedInstallers
- DRJ Electricals-Gas LtdElectricians
- The New Drivers Shop LtdMotor traders
- Knoxford Plumbing & Heating LtdPlumbers and heating engineers
- Frontline Design & Build LtdBuilders
- Vellarowheels LtdMotor traders
- Lady Ace Cleaning Co LimitedCleaning companies
What happens if Neptunium Developments 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
- 09389405
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 January 2015 (11 years ago)
- Registered office
- 63 Princes Avenue, Sanderstead, South Croydon, Surrey, CR2 9BF
- Nature of business
- Combined facilities support activities (SIC 81100)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 14 January 2026
Filing notes for facilities management companies
Facilities management companies usually invoice on contract, so accrued income and deferred income matter at the year end.
Similar companies in South Croydon
Other active facilities management companies registered in South Croydon.
- No.4 Blunt Road Limited2005
- Planning Solutions and Logistics Masters Services Ltd2022
- Professional Contract Cleaning Limited2019
- Professional Contract Maintenance Limited2020
- Wavebrae Limited1971
- Astoria Court Management Limited2001
- Cube Estate Management Limited2026
- Distinct Maintenance Services Ltd2012
All facilities management companies in South Croydon · All trades in South Croydon · Facilities management across the UK
Frequently asked questions
When are Neptunium Developments Ltd's accounts due?
Neptunium Developments Ltd's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Neptunium Developments 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 Neptunium Developments Ltd still trading?
Neptunium Developments 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 Neptunium Developments Ltd do?
Neptunium Developments Ltd is registered under Combined facilities support activities (SIC 81100).
How old is Neptunium Developments Ltd?
Neptunium Developments Ltd was incorporated on 14 January 2015, 11 years ago.
Who runs Neptunium Developments Ltd?
Neptunium Developments Ltd has 1 active director, the longest-serving appointed in Jan 2015. Their names and service addresses are on the Companies House register.
Who owns Neptunium Developments Ltd?
One person or company has significant control of Neptunium Developments Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Neptunium Developments 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 Neptunium Developments 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.