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- Portstream Limited
Company profile · Property developers
Portstream Limited
Portstream Limited is a 11-year-old private limited company registered in London, company number 09649376, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 May 2026, as filed at Companies House.
Portstream Limited 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 £31K on the year before, to £31K.
- Net assets rose in 1 of 9 year-on-year comparisons on record.
- Current assets of £96K against £65K owed within a year: 1.5 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £31K | £95K | £96K | £65K | 0 |
| 30 Jun 2025 | £1 | ||||
| 30 Jun 2024 | £1 | ||||
| 30 Jun 2023 | £1 | ||||
| 30 Jun 2022 | £1 | ||||
| 30 Jun 2021 | £1 | ||||
| 30 Jun 2020 | £1 | ||||
| 30 Jun 2019 | £1 | ||||
| 30 Jun 2018 | £1 | ||||
| 30 Jun 2017 | £1 |
Who runs and owns Portstream Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (2)
| Name | Role | Appointed |
|---|---|---|
| A*** M*** | Director | Jul 2025 |
| A*** S*** | Director | Jan 2026 |
5 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| Chalfen Secretaries Limited | Secretary (company) | Jun 2015 | Mar 2024 |
| E*** M*** | Director | Nov 2018 | Nov 2021 |
| J*** P*** | Director | Jun 2015 | Nov 2018 |
| N*** T*** | Director | Mar 2024 | Jul 2025 |
| L*** Y*** | Director | Nov 2021 | Mar 2024 |
Person with significant control
Where Portstream Limited is registered
The registered office is in London (W8), in the Kensington and Chelsea local authority area, London. Show W8 6SN on a map.
Other trade companies in W8
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- Cre HP 70 LtdBuilders
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- Arxionis LtdProperty developers
- Crimson Re Developments LtdBuilders
- Heaven Builders LimitedProperty developers
Also registered at this address
3 other companies use the same registered office as Portstream Limited.
- Leader Development LimitedBuilders
- Marine Shipbuilding Company UK LtdCivil engineering
- Serviceshift LtdCleaning companies
What happens if Portstream Limited 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 09649376
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2015 (11 years ago)
- Registered office
- 239 Kensington High Street, London, W8 6SN
- Nature of business
- Development of building projects (SIC 41100)
Engineering related scientific and technical consulting activities (SIC 71122) - Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 21 May 2026
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 London
Other active property development companies registered in London.
- Posatech Ltd2026
- Positive Residences Limited2022
- Posner Medical Ltd2025
- Postacre Resident Association Limited1982
- Postcross Limited2000
- Potters Clay Ltd2026
- Potters Newbuild Ltd2026
- Pounder Ltd2021
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Portstream Limited's accounts due?
Portstream Limited's next accounts are due at Companies House by 29 February 2028 (in 505 days), covering the period to 31 May 2027.
When is Portstream Limited's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Portstream Limited still trading?
Portstream Limited 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 Portstream Limited do?
Portstream Limited is registered under Development of building projects (SIC 41100); Engineering related scientific and technical consulting activities (SIC 71122).
How old is Portstream Limited?
Portstream Limited was incorporated on 20 June 2015, 11 years ago.
Who runs Portstream Limited?
Portstream Limited has 2 active directors, the longest-serving appointed in Jul 2025. Their names and service addresses are on the Companies House register.
Who owns Portstream Limited?
One person or company has significant control of Portstream Limited: an individual (owns 75% or more of the shares).
What is the penalty if Portstream Limited 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 Portstream Limited 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.