- Company number
- 12408541
- Incorporated
- 17 Jan 20206 years trading
- Registered office
- 141 Chase Side, Enfield, EN2 0PN
- Nature of business
- Construction of domestic buildings; Repair of furniture and home furnishings
Neptune Construction and Engineering Limited is a 6-year-old private limited company registered in Enfield, company number 12408541, one of 343 building contractors in Enfield. 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 down £417 (-65.2%) on the year before, to £223.
- Net assets rose in 1 of 5 year-on-year comparisons on record.
- Current assets of £12K against £13K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £223 | £12K | £13K | 1 | |
| 31 Oct 2024 | £640 | £17K | £16K | 1 | |
| 31 Oct 2023 | £1,333 | £14K | £12K | 1 | |
| 31 Oct 2022 | £1,953 | £8,915 | £6,962 | 1 | |
| 31 Oct 2021 | £123 | £1,302 | £3,335 | £35 | 1 |
| 31 Oct 2020 | £1,564 | £2,850 | 0 |
Where Neptune Construction and Engineering Limited is registered
The registered office is in Enfield (EN2), in the Enfield local authority area, London. Show EN2 0PN on a map.
Other trade companies in EN2
- N.O.J Recovery Services LtdMechanics and garages
- 1901 Bespoke LimitedRepair services
- Allfloors London LtdFloor and wall tilers
- Global Plant and Construction LtdProperty developers
- Bmap LtdFinishing trades
- MK Decorator (London) LtdPainters and decorators
- Cityrise Scaffolding LimitedScaffolders
- Alc Maintenance LtdMachinery repair and installation
Also registered at this address
19 other companies use the same registered office as Neptune Construction and Engineering Limited.
- Dilek Araz Construction LimitedBuilders
- Dodi Kale LimitedPainters and decorators
- E2 Construction LtdCivil engineering
- Ed's Handyman LimitedPainters and decorators
- Eltech Solutions LtdElectricians
- Emd Construction Consultancy LtdPlumbers and heating engineers
- Enviro-Safety Consultancy LtdSpecialist contractors
- Eval Property Investment LtdBuilders
- Ezgi Cleaning LtdCleaning companies
- Idea Zone LtdBuilders
- Kemikli Electric LtdMachinery repair and installation
- Koc Maintenance LimitedMachinery repair and installation
- Linfield Electrical LimitedElectricians
- Mend Grup LtdProperty developers
- November Electric LtdElectricians
- Palo Cleaning UK LimitedCleaning companies
- Sanitara Cleaning LimitedCleaning companies
- Urastar Construction LtdCivil engineering
- Voltzilla Electrician Services LtdMachinery repair and installation
What happens if Neptune Construction and Engineering 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 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
- 12408541
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 January 2020 (6 years ago)
- Registered office
- 141 Chase Side, Enfield, EN2 0PN
- Nature of business
- Construction of domestic buildings (SIC 41202)
Repair of furniture and home furnishings (SIC 95240) - Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 16 January 2026
- Previous names
- Neptune Construction, Engineering and Repair Ltd (until 18 Nov 2021)
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 Enfield
Other active building contractors registered in Enfield.
- Nes Properties Ltd2020
- New Deal Construction Ltd2021
- New Decor Ltd2013
- New Point Renovation Limited2026
- Nexgen Gear Ltd2024
- Nexus Synergy Group Ltd2024
- Nico Contractors Limited2005
- Nicolas&B Ltd2025
All building contractors in Enfield · All trades in Enfield · Builders across the UK
Frequently asked questions
When are Neptune Construction and Engineering Limited's accounts due?
Neptune Construction and Engineering Limited's next accounts are due at Companies House by 31 July 2027 (in 292 days), covering the period to 31 October 2026.
When is Neptune Construction and Engineering Limited'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 Neptune Construction and Engineering Limited still trading?
Neptune Construction and Engineering 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 Neptune Construction and Engineering Limited do?
Neptune Construction and Engineering Limited is registered under Construction of domestic buildings (SIC 41202); Repair of furniture and home furnishings (SIC 95240).
How old is Neptune Construction and Engineering Limited?
Neptune Construction and Engineering Limited was incorporated on 17 January 2020, 6 years ago.
What is the penalty if Neptune Construction and Engineering 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 Neptune Construction and Engineering 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.