- Companies
- Specialist contractors
- London
- N4 Gas Limited
N4 Gas Limited
- Company number
- 06472503
- Incorporated
- 14 Jan 200818 years trading
- Registered office
- First Floor 677 High Road, North Finchley, London, N12 0DA
- Nature of business
- Other specialised construction activities n.e.c.
N4 Gas Limited is a 18-year-old private limited company registered in London, company number 06472503, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 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 £22K (-2.6%) on the year before, to £821K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- 12 employees on average, up from 0 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Jan 2025 | £821K | £108K | 12 | ||
| 31 Jan 2024 | £843K | £893K | £84K | 0 | |
| 31 Jan 2023 | £927K | £962K | £85K | 14 | |
| 31 Jan 2022 | £1M | £905K | £1.1M | £94K | 12 |
| 31 Jan 2021 | £1M | £878K | £1.1M | £102K | 13 |
| 31 Jan 2020 | £994K | £885K | £1.1M | £158K | 11 |
| 31 Jan 2019 | £817K | £694K | £890K | £132K | 11 |
| 31 Jan 2018 | £697K | £555K | £769K | £129K | 11 |
| 31 Jan 2017 | £479K | £391K | £656K | £230K | 9 |
| 31 Jan 2016 | £249K | £931K | £1.1M | £910K |
Where N4 Gas Limited is registered
The registered office is in London (N12), in the Barnet local authority area, London. Show N12 0DA on a map.
Other trade companies in N12
- Sullivan Property and Maintenance LtdFacilities management
- Mael Property Services LtdFinishing trades
- Horizon Constructors LtdProperty developers
- Alfawine Group LimitedFinishing trades
- Sam Motors Group LimitedMotor traders
- Heating on Demand LtdPlumbers and heating engineers
- Premium Electrical LtdElectricians
- Amaiya Sparks LtdCleaning companies
Also registered at this address
10 other companies use the same registered office as N4 Gas Limited.
- G & U Form LimitedFinishing trades
- Hanbury Investments LtdMotor traders
- HKNS LimitedMechanics and garages
- Japex Automotive LimitedMechanics and garages
- KH Contracts LtdJoiners and carpenters
- LCS Ground Maintenance LimitedLandscapers and gardeners
- Matthew Baron Construction LimitedInstallers
- Mirzo LimitedElectricians
- Oakmere Trading Company LimitedMotor traders
- Running Wires LtdElectricians
What happens if N4 Gas 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 06472503
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 January 2008 (18 years ago)
- Registered office
- First Floor 677 High Road, North Finchley, London, N12 0DA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 14 January 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 London
Other active specialist construction companies registered in London.
- Na Builders Ltd2026
- Na Property Renovations Ltd2025
- Nah Carpentry Limited2015
- Namm Group Ltd2023
- Nano Architecture Ltd2026
- Nar Construction Ltd2020
- Nas Gas Repair Ltd2016
- Nasdor Ltd2015
All specialist construction companies in London · All trades in London · Specialist contractors across the UK
Frequently asked questions
When are N4 Gas Limited's accounts due?
N4 Gas Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is N4 Gas Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is N4 Gas Limited still trading?
N4 Gas 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 N4 Gas Limited do?
N4 Gas Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is N4 Gas Limited?
N4 Gas Limited was incorporated on 14 January 2008, 18 years ago.
What is the penalty if N4 Gas 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 N4 Gas 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.