- Companies
- Installers
- London
- Gsi Maintenance Limited
Gsi Maintenance Limited
- Company number
- 12663352
- Incorporated
- 11 Jun 20206 years trading
- Registered office
- 167-169 Great Portland Street 5TH Floor, London, W1W 5PF
- Nature of business
- Other construction installation
Gsi Maintenance Limited is a 6-year-old private limited company registered in London, company number 12663352, one of 2,278 installation companies (insulation, lifts, shutters and similar) in London. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
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 £59K (-70.5%) on the year before, to £24K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £156K against £132K owed within a year: 1.2 times cover.
- 3 employees on average, up from 2 the year before.
- Balance sheets on record for 5 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £24K | £7,657 | £156K | £132K | 3 |
| 31 Dec 2023 | £83K | £97K | £254K | £171K | 2 |
| 30 Jun 2023 | £100 | £100 | |||
| 30 Jun 2022 | £100 | £100 | |||
| 30 Jun 2021 | £100 | £100 |
Where Gsi Maintenance Limited is registered
The registered office is in London (W1W), in the Westminster local authority area, London. Show W1W 5PF on a map.
Other trade companies in W1W
- Civaris LtdSpecialist contractors
- R&R Construction Group LtdBuilders
- Aurum Cooling LtdPlumbers and heating engineers
- Steam Wood Stone LtdFinishing trades
- Hau Developments LimitedProperty developers
- Group Atlas Financial 83 LtdPainters and decorators
- Energy Reward LtdMotor traders
- Holly’S Housekeeping LtdCleaning companies
Shared registered office
97 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 Gsi Maintenance 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12663352
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 June 2020 (6 years ago)
- Registered office
- 167-169 Great Portland Street 5TH Floor, London, W1W 5PF
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 10 June 2026
- Previous names
- Gsi Recruitment Ltd (until 23 Aug 2023)
Next Level Network Ltd (until 15 Jun 2021)
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in London
Other active installation companies (insulation, lifts, shutters and similar) registered in London.
- GT Cleaning Company Ltd2025
- Guildmore Midlands & North Limited2025
- Gul Installing Ltd2023
- Guvi Bros Ltd2023
- Guy Clark Ltd2024
- GW Harris Ltd2017
- GZS Construction Ltd2026
- H & K Building Ltd2014
All installation companies (insulation, lifts, shutters and similar) in London · All trades in London · Installers across the UK
Frequently asked questions
When are Gsi Maintenance Limited's accounts due?
Gsi Maintenance Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Gsi Maintenance Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Gsi Maintenance Limited still trading?
Gsi Maintenance 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 Gsi Maintenance Limited do?
Gsi Maintenance Limited is registered under Other construction installation (SIC 43290).
How old is Gsi Maintenance Limited?
Gsi Maintenance Limited was incorporated on 11 June 2020, 6 years ago.
What is the penalty if Gsi Maintenance 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 Gsi Maintenance 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.