- Companies
- Specialist contractors
- London
- Sergons Ltd
Sergons Ltd
- Company number
- 14507034
- Incorporated
- 25 Nov 20223 years trading
- Registered office
- Flat B, 13 Wordsworth Parade, Green Lanes, London, N8 0SJ
- Nature of business
- Other specialised construction activities n.e.c.; Unlicensed carrier
Sergons Ltd is a 3-year-old private limited company registered in London, company number 14507034, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £21K (+224.8%) on the year before, to £12K.
- Current assets of £41K against £35K owed within a year: 1.2 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £12K | £41K | £35K | 0 | |
| 31 Oct 2024 | -£9,220 | £5,366 | £21K | 0 | |
| 31 Oct 2023 | £1,709 | £1,252 | £5,543 | 0 |
Where Sergons Ltd is registered
The registered office is in London (N8), in the Haringey local authority area, London. Show N8 0SJ on a map.
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- M C Properties Investment LimitedBuilders
- Hilton Construction Group LtdBuilders
- Apex Integrated Cleaning LtdCleaning companies
- Ogb Projects London LtdFloor and wall tilers
- N8 Auto LtdMechanics and garages
- Nexuswire UK LtdElectricians
What happens if Sergons 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 14507034
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 November 2022 (3 years ago)
- Registered office
- Flat B, 13 Wordsworth Parade, Green Lanes, London, N8 0SJ
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Unlicensed carrier (SIC 53202) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 1 November 2025
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 London
Other active specialist construction companies registered in London.
- Sermirav Auto Ltd2021
- Serpasgb Ltd.2015
- Sersem Services Ltd2024
- Servdata Ltd2026
- Service Group Energy Ltd2026
- Sevan Multi-Site Solutions Limited2018
- Sevan UK Holdings Limited2020
- Seven Drops Drylining Limited2026
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are Sergons Ltd's accounts due?
Sergons Ltd's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Sergons Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Sergons Ltd still trading?
Sergons 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 Sergons Ltd do?
Sergons Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999); Unlicensed carrier (SIC 53202).
How old is Sergons Ltd?
Sergons Ltd was incorporated on 25 November 2022, 3 years ago.
What is the penalty if Sergons 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 Sergons 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.