- Company number
- 09413010
- Incorporated
- 29 Jan 201511 years trading
- Registered office
- C/O Abacus Pegasus Court, 27 Herschel Street, Slough, SL1 1PA
- Nature of business
- Construction of domestic buildings
Birnbeck Limited is a 11-year-old private limited company registered in Slough, company number 09413010, one of 683 building contractors in Slough. 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 £551 (-2.8%) on the year before, to £19K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- 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 | £19K | £19K | 0 | ||
| 31 Jan 2024 | £20K | £20K | £0 | 0 | |
| 31 Jan 2023 | £21K | £21K | £782 | 0 | |
| 31 Jan 2022 | £20K | £24K | £3,858 | 0 | |
| 31 Jan 2021 | £19K | £353 | £23K | £3,761 | 0 |
| 31 Jan 2020 | £17K | £1,005 | £20K | £3,125 | 0 |
| 31 Jan 2019 | £8,402 | £360 | £9,902 | £1,500 | |
| 31 Jan 2018 | £6,700 | £319 | £9,319 | £2,619 | |
| 31 Jan 2017 | £4,307 | £650 | £5,359 | £1,052 | |
| 31 Jan 2016 | £1 | £1 |
Where Birnbeck Limited is registered
The registered office is in Slough (SL1), in the Slough local authority area, South East. Show SL1 1PA on a map.
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- Yad Building Services LimitedBuilders
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Also registered at this address
13 other companies use the same registered office as Birnbeck Limited.
- Abacus Commercial Cleans LtdCleaning companies
- Automotive Customs & Repairs LtdMechanics and garages
- Bright Day Cars & Recovery LtdMotor traders
- Epiventures LtdMotor traders
- Haval Building LtdBuilders
- Hmy Automotive LtdMotor traders
- Khan & Khan LtdBuilders
- Meterit Utilities LtdCivil engineering
- Motas Workshop LtdMechanics and garages
- PMK Tyres LtdMechanics and garages
- Swift Car Sales Swindon LtdMotor traders
- Tennen LtdBuilders
- Wiltshire Car and Vans Sales LtdMotor traders
What happens if Birnbeck 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 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
- 09413010
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 January 2015 (11 years ago)
- Registered office
- C/O Abacus Pegasus Court, 27 Herschel Street, Slough, SL1 1PA
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 17 October 2025
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Slough
Other active building contractors registered in Slough.
- BKZ Contractors Ltd2019
- Blackstone Private Ltd2024
- BMT Recruitment Services Ltd2026
- Bowleys Building Services Ltd2025
- Braham Construction Limited2021
- Brandon Builders Ltd2022
- Brick-Row Building Solutions Ltd2021
- Brit Build Group Ltd2016
All building contractors in Slough · All trades in Slough · Builders across the UK
Frequently asked questions
When are Birnbeck Limited's accounts due?
Birnbeck Limited's next accounts are due at Companies House by 31 October 2026 (in 19 days), covering the period to 31 January 2026.
When is Birnbeck Limited'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 Birnbeck Limited still trading?
Birnbeck 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 Birnbeck Limited do?
Birnbeck Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Birnbeck Limited?
Birnbeck Limited was incorporated on 29 January 2015, 11 years ago.
What is the penalty if Birnbeck 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 Birnbeck 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.