- Company number
- 10305023
- Incorporated
- 1 Aug 201610 years trading
- Registered office
- 53 ST James's Drive, 53 ST. James's Drive, London, SW17 7RN
- Nature of business
- Construction of domestic buildings
Blakelynn Limited is a 10-year-old private limited company registered in London, company number 10305023, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 31 December 2024, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Blakelynn 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 down £313K on the year before, to -£289K.
- Net assets rose in 2 of 7 year-on-year comparisons on record.
- Current assets of £199K against £153K owed within a year: 1.3 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 8 years, 2017 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£289K | £242 | £199K | £153K | 3 |
| 31 Dec 2023 | £25K | £756 | £202K | £18K | 3 |
| 31 Dec 2022 | £54K | £104 | £124K | £142K | 3 |
| 31 Dec 2021 | £88K | £4,923 | £81K | £66K | 3 |
| 31 Dec 2020 | £249K | £18K | £1.5M | £1.3M | 3 |
| 31 Aug 2019 | £258K | £87 | £2.3M | £2.1M | 3 |
| 31 Aug 2018 | £165K | £35 | £828K | £454K | 3 |
| 31 Aug 2017 | -£598 | £10 | £77K | £78K |
Where Blakelynn Limited is registered
The registered office is in London (SW17), in the Wandsworth local authority area, London. Show SW17 7RN on a map.
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What happens if Blakelynn 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
- 10305023
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 August 2016 (10 years ago)
- Registered office
- 53 ST James's Drive, 53 ST. James's Drive, London, SW17 7RN
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 5 September 2025
- Charges (mortgages)
- 1 outstanding of 6 registered
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 London
Other active building contractors registered in London.
- Blakemore Investments Limited2022
- Blakey Builds Ltd2025
- Blazuz Ltd2022
- Bleajbu CMP Limited2021
- Blend Construction Ltd2026
- BLG Development Limited2021
- Blimey Solutions Ltd2020
- Blitz Construction Ltd2023
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Blakelynn Limited's accounts due?
Blakelynn 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 Blakelynn Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Blakelynn Limited still trading?
Blakelynn Limited is listed as active on the Companies House register (checked 12 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 Blakelynn Limited do?
Blakelynn Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Blakelynn Limited?
Blakelynn Limited was incorporated on 1 August 2016, 10 years ago.
What is the penalty if Blakelynn 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 Blakelynn Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.