- Companies
- Property developers
- Southsea
- Greenbox Associates Ltd
Greenbox Associates Ltd
- Company number
- 00339626
- Incorporated
- 25 Apr 193888 years trading
- Registered office
- 61 Bristol Road, Southsea, Hampshire, PO4 9QH
- Nature of business
- Development of building projects
Greenbox Associates Ltd is a 88-year-old private limited company registered in Southsea, company number 00339626, one of 39 property development companies in Southsea. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £8,394 (-85.3%) on the year before, to £1,446.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £11K against £11K owed within a year: 1.1 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 Dec 2025 | £1,446 | £11K | £11K | 1 | |
| 31 Dec 2024 | £9,840 | £17K | £8,798 | 1 | |
| 31 Dec 2023 | £21K | £31K | £11K | 1 | |
| 31 Dec 2022 | £28K | £46K | £20K | 1 | |
| 31 Dec 2021 | £13K | £28K | £16K | 1 | |
| 31 Dec 2020 | £4,911 | £8,494 | £4,276 | 1 | |
| 31 Dec 2019 | £4,365 | £7,706 | £3,548 | 1 | |
| 31 Dec 2018 | £4,190 | £2,711 | £6,231 | £2,263 | 1 |
| 31 Dec 2017 | £4,049 | £3,957 | £7,047 | £3,800 | 1 |
| 31 Dec 2016 | £4,194 | £264 | £7,600 | £4,915 | 1 |
Who runs and owns Greenbox Associates Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| R*** M*** | Director | May 2008 |
| J*** M*** | Secretary | before Oct 1991 |
2 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| J*** M*** | Director | May 2008 | |
| S*** M*** | Director | Jan 2008 |
Person with significant control
Public contracts won
Greenbox Associates Ltd has one public sector contract award on record; the ones with their own published value total £45K (2022). Source: Contracts Finder and Find a Tender award notices.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| East Hampshire District Council | Awarded Contract | £45K | 1 Jun 2022 |
Where Greenbox Associates Ltd is registered
The registered office is in Southsea (PO4), in the Portsmouth local authority area, South East. Show PO4 9QH on a map.
Other trade companies in PO4
- Prestiige LtdMechanics and garages
- Portsea Homes LimitedProperty developers
- Elite Building Services (Portsmouth) LtdBuilders
- G Form Drylining LimitedPlasterers
- Solent Sales Haulage & Storage LtdMotor traders
- Koko Construction LtdBuilders
- Chase RCS LtdCivil engineering
- Proper Job Handyman LtdFinishing trades
What happens if Greenbox Associates 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 00339626
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 April 1938 (88 years ago)
- Registered office
- 61 Bristol Road, Southsea, Hampshire, PO4 9QH
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 30 October 2025
- Previous names
- Brilliant Futures Consulting South Ltd (until 28 May 2012)
W.A. Mitchell & Smith Limited (until 3 Dec 2010)
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Southsea
Other active property development companies registered in Southsea.
- Greyfalcon Development Limited2012
- James Potter Developments Ltd2022
- JZ Property Group Ltd2018
- Lakeside Construction Ltd2026
- LWK Developments Limited2017
- M Developments 88 Ltd2025
- Marmion View Limited2024
- Opal Affordable Properties Ltd2025
All property development companies in Southsea · All trades in Southsea · Property developers across the UK
Frequently asked questions
When are Greenbox Associates Ltd's accounts due?
Greenbox Associates Ltd's next accounts are due at Companies House by 30 September 2027 (in 352 days), covering the period to 31 December 2026.
When is Greenbox Associates Ltd's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Greenbox Associates Ltd still trading?
Greenbox Associates 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 Greenbox Associates Ltd do?
Greenbox Associates Ltd is registered under Development of building projects (SIC 41100).
How old is Greenbox Associates Ltd?
Greenbox Associates Ltd was incorporated on 25 April 1938, 88 years ago.
Who runs Greenbox Associates Ltd?
Greenbox Associates Ltd has 1 active director, the longest-serving appointed in May 2008. Their names and service addresses are on the Companies House register.
Who owns Greenbox Associates Ltd?
One person or company has significant control of Greenbox Associates Ltd: an individual (owns 75% or more of the shares).
Has Greenbox Associates Ltd won public sector contracts?
Yes. Greenbox Associates Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £45K), most recently from East Hampshire District Council.
What is the penalty if Greenbox Associates 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 Greenbox Associates 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.