- Companies
- Specialist contractors
- Portsmouth
- Black Lynx Ltd
Black Lynx Ltd
- Company number
- 13265834
- Incorporated
- 15 Mar 20215 years trading
- Registered office
- 20 Old Manor Way, Portsmouth, PO6 2NN
- Nature of business
- Other specialised construction activities n.e.c.
Black Lynx Ltd is a 5-year-old private limited company registered in Portsmouth, company number 13265834, one of 193 specialist construction companies in Portsmouth. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £30K (+90.1%) on the year before, to £63K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £54K against £18K owed within a year: 3.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 5 years, 2022 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £63K | £54K | £18K | 0 | |
| 31 Mar 2025 | £33K | £53K | £21K | 0 | |
| 31 Mar 2024 | £11K | £1,827 | £39K | £30K | 1 |
| 31 Mar 2023 | £11K | £9,330 | £26K | £16K | 1 |
| 31 Mar 2022 | £1,033 | £845 | £5,278 | £5,396 | 1 |
Where Black Lynx Ltd is registered
The registered office is in Portsmouth (PO6), in the Portsmouth local authority area, South East. Show PO6 2NN on a map.
Other trade companies in PO6
- Bellagio Partners LtdBuilders
- Cpenw LtdMachinery repair and installation
- Marla Brickwork & Construction LtdProperty developers
- Miracles in Metal LtdMechanics and garages
- FH Fire & Electrical LtdElectricians
- Thomcore LimitedSpecialist contractors
- JMS Southern LtdElectricians
- The Motum Group LtdSpecialist contractors
What happens if Black Lynx 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 13265834
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 March 2021 (5 years ago)
- Registered office
- 20 Old Manor Way, Portsmouth, PO6 2NN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 14 March 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Portsmouth
Other active specialist construction companies registered in Portsmouth.
- Blenheim Builders Limited2016
- Brian Mabe Fire Protection Ltd2016
- Bricktex Southern Limited2022
- C Conway Groundworks Ltd2024
- C Kelly Brickwork Services Limited2006
- C45 Limited2017
- Calidad Installations Ltd2013
- Cardinal Integrated Services Ltd2023
All specialist construction companies in Portsmouth · All trades in Portsmouth · Specialist contractors across the UK
Frequently asked questions
When are Black Lynx Ltd's accounts due?
Black Lynx Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Black Lynx Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Black Lynx Ltd still trading?
Black Lynx 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 Black Lynx Ltd do?
Black Lynx Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Black Lynx Ltd?
Black Lynx Ltd was incorporated on 15 March 2021, 5 years ago.
What is the penalty if Black Lynx 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 Black Lynx 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.