- Companies
- Civil engineering
- Sidcup
- Sigeng Ltd
Sigeng Ltd
- Company number
- 11040123
- Incorporated
- 31 Oct 20178 years trading
- Registered office
- 12 Hatherley Road, Sidcup, Kent, DA14 4DT
- Nature of business
- Construction of railways and underground railways
Sigeng Ltd is a 8-year-old private limited company registered in Sidcup, company number 11040123, one of 63 civil engineering contractors in Sidcup. 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 £45K (+23.8%) on the year before, to £232K.
- Net assets rose in 7 of 7 year-on-year comparisons on record.
- Current assets of £257K against £58K owed within a year: 4.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £232K | £215K | £257K | £58K | 2 |
| 31 Oct 2024 | £188K | £181K | £187K | £38K | 2 |
| 31 Oct 2023 | £160K | £135K | £171K | £51K | 2 |
| 31 Oct 2022 | £97K | £121K | £121K | £65K | 2 |
| 31 Oct 2021 | £52K | £91K | £91K | £50K | 2 |
| 31 Oct 2020 | £32K | £66K | £66K | £46K | 2 |
| 31 Oct 2019 | £8,630 | £21K | £33K | £28K | 2 |
| 31 Oct 2018 | £4,293 | £46K | £46K | £44K | 2 |
Where Sigeng Ltd is registered
The registered office is in Sidcup (DA14), in the Bexley local authority area, London. Show DA14 4DT on a map.
Other trade companies in DA14
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- Pfe Services LimitedElectricians
- CJM Property Services LimitedFinishing trades
- Top Local Trader LtdBuilders
- Bassett Electrical Group LimitedElectricians
- Flatline Flooring LtdFloor and wall tilers
- LDT Service's LimitedScaffolders
- Old Maidstone Road Hand Car Wash LtdMechanics and garages
Shared registered office
427 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Sigeng 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
- 11040123
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 October 2017 (8 years ago)
- Registered office
- 12 Hatherley Road, Sidcup, Kent, DA14 4DT
- Nature of business
- Construction of railways and underground railways (SIC 42120)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 5 November 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Sidcup
Other active civil engineering contractors registered in Sidcup.
- Sja Technical Services Limited2018
- South Surfacing Limited2025
- Sri P-Way Engineering Limited2015
- Thompson Welding & Construction Ltd2017
- Tickner Tracks Limited2016
- Track Air Consultants Limited2019
- Tydal Engineering Ltd2019
- Wilson Engineering Solutions Services Limited2024
All civil engineering contractors in Sidcup · All trades in Sidcup · Civil engineering across the UK
Frequently asked questions
When are Sigeng Ltd's accounts due?
Sigeng 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 Sigeng 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 Sigeng Ltd still trading?
Sigeng 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 Sigeng Ltd do?
Sigeng Ltd is registered under Construction of railways and underground railways (SIC 42120).
How old is Sigeng Ltd?
Sigeng Ltd was incorporated on 31 October 2017, 8 years ago.
What is the penalty if Sigeng 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 Sigeng 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.