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- Sectronic Limited
Company profile · Specialist contractors
Sectronic Limited
Sectronic Limited is a 19-year-old private limited company registered in Finchley, company number 06225402, one of 10 specialist construction companies in Finchley. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 30 April 2025, as filed at Companies House.
Sectronic 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 £6,682 (+36.4%) on the year before, to £25K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £69K against £45K owed within a year: 1.6 times cover.
- 1 employee 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 |
|---|---|---|---|---|---|
| 30 Apr 2025 | £25K | £69K | £45K | 1 | |
| 30 Apr 2024 | £18K | £45K | £27K | 1 | |
| 30 Apr 2023 | £5,191 | £9,910 | £5,119 | 1 | |
| 30 Apr 2022 | £10K | £20K | £10K | 1 | |
| 30 Apr 2021 | £21K | £75K | £55K | 1 | |
| 30 Apr 2020 | £41K | £87K | £46K | 1 | |
| 30 Apr 2019 | £31K | £71K | £42K | ||
| 30 Apr 2018 | £15K | £51K | £37K | ||
| 30 Apr 2017 | £7,329 | £41K | £35K | ||
| 30 Apr 2016 | £891 | £24K | £31K | £32K |
Where Sectronic Limited is registered
The registered office is in Finchley (N3), in the Barnet local authority area, London. Show N3 3NL on a map.
Other trade companies in N3
- Key & Keep LtdCleaning companies
- GMS Residential LimitedPlumbers and heating engineers
- Gcap East LtdProperty developers
- Tatras Development LimitedProperty developers
- Chesterfield Corinne LtdProperty developers
- Pure Plumbing Pros LimitedPlumbers and heating engineers
- WS Cleaning Services LtdCleaning companies
- Landfall Projects LimitedProperty developers
What happens if Sectronic 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 06225402
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 24 April 2007 (19 years ago)
- Registered office
- 11 Orchard Avenue, Finchley, London, N3 3NL
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 24 April 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 Finchley
Other active specialist construction companies registered in Finchley.
- Silver Crest Air Conditioning Limited1992
- Viking Master Developers Ltd2011
- Baron Property Consultants Limited2002
- Cassidy Tower Crane Services Limited2019
- CSN Assets Limited2018
- Empire Concrete Pumping Limited2018
- Green Way Design & Build Ltd2015
- House Extension Company London Limited2025
All specialist construction companies in Finchley · All trades in Finchley · Specialist contractors across the UK
Frequently asked questions
When are Sectronic Limited's accounts due?
Sectronic Limited's next accounts are due at Companies House by 31 January 2027 (in 111 days), covering the period to 30 April 2026.
When is Sectronic Limited's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Sectronic Limited still trading?
Sectronic 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 Sectronic Limited do?
Sectronic Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Sectronic Limited?
Sectronic Limited was incorporated on 24 April 2007, 19 years ago.
What is the penalty if Sectronic 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 Sectronic 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.