- Companies
- Property developers
- London
- Protofast Limited
Protofast Limited
- Company number
- 02167635
- Incorporated
- 21 Sep 198739 years trading
- Registered office
- 35 Stane Grove, London, SW9 9AL
- Nature of business
- Development of building projects; Management of real estate on a fee or contract basis
Protofast Limited is a 39-year-old private limited company registered in London, company number 02167635, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 up £10K (+27.4%) on the year before, to £48K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £115K against £65K owed within a year: 1.8 times cover.
- 2 employees 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 Mar 2025 | £48K | £115K | £65K | 2 | |
| 31 Mar 2024 | £38K | £126K | £89K | 2 | |
| 31 Mar 2023 | £35K | £160K | 2 | ||
| 31 Mar 2022 | £47K | £715K | £661K | 2 | |
| 31 Mar 2021 | £35K | £531K | £494K | 2 | |
| 31 Mar 2020 | £33K | £118K | 2 | ||
| 31 Mar 2019 | £30K | £546K | |||
| 31 Mar 2018 | £25K | £380K | |||
| 31 Mar 2017 | £49K | £175K | |||
| 31 Mar 2016 | £43K | £522K | £481K |
Where Protofast Limited is registered
The registered office is in London (SW9), in the Lambeth local authority area, London. Show SW9 9AL on a map.
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Also registered at this address
3 other companies use the same registered office as Protofast Limited.
- Arrowport LimitedProperty developers
- Ramshire LimitedProperty developers
- Wingmatic LimitedProperty developers
What happens if Protofast 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 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 02167635
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 September 1987 (39 years ago)
- Registered office
- 35 Stane Grove, London, SW9 9AL
- Nature of business
- Development of building projects (SIC 41100)
Management of real estate on a fee or contract basis (SIC 68320) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 31 March 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.
- Proton+ Ltd2022
- Prout Partnership Ltd2019
- Provate Limited1997
- Provent Consortium Ltd2016
- Provide Property Trading Ltd2026
- Providence Red Limited2021
- Provident Brickwork Ltd2022
- Provis Estates (Monmouth) Limited2006
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Frequently asked questions
When are Protofast Limited's accounts due?
Protofast Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is Protofast Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Protofast Limited still trading?
Protofast 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 Protofast Limited do?
Protofast Limited is registered under Development of building projects (SIC 41100); Management of real estate on a fee or contract basis (SIC 68320).
How old is Protofast Limited?
Protofast Limited was incorporated on 21 September 1987, 39 years ago.
What is the penalty if Protofast 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 Protofast 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.