- Companies
- Installers
- Covent Garden
- SJL Maintenance Ltd
SJL Maintenance Ltd
- Company number
- 17106198
- Incorporated
- 20 Mar 2026
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Other construction installation; Plastering; Other building completion and finishing; Roofing activities
SJL Maintenance Ltd is a newly incorporated private limited company registered in Covent Garden, company number 17106198, one of 167 installation companies (insulation, lifts, shutters and similar) in Covent Garden. Its next accounts are due at Companies House on 20 December 2027, and its first CT600 is due at HMRC on 19 March 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where SJL Maintenance Ltd is registered
The registered office is in Covent Garden (WC2H), in the Camden local authority area, London. Show WC2H 9JQ on a map.
Other trade companies in WC2H
- Superclean Agency LtdCleaning companies
- Sal Cleaning LtdCleaning companies
- Cityshine Facilities Services LtdCleaning companies
- Pureoceanscleaning LtdCleaning companies
- Muca Property Group LimitedProperty developers
- E.L.G.G LtdJoiners and carpenters
- First Ascentia Integrated LtdCleaning companies
- Fixing London LtdSpecialist contractors
Shared registered office
4,529 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 SJL Maintenance 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 20 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Dec 2027 to 20 Jan 2028 | £150 |
| 1 to 3 months late | 21 Jan 2028 to 20 Mar 2028 | £375 |
| 3 to 6 months late | 21 Mar 2028 to 20 Jun 2028 | £750 |
| More than 6 months late | From 21 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 17106198
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 March 2026
- Registered office
- 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ
- Nature of business
- Other construction installation (SIC 43290)
Plastering (SIC 43310)
Other building completion and finishing (SIC 43390)
Roofing activities (SIC 43910) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
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 Covent Garden
Other active installation companies (insulation, lifts, shutters and similar) registered in Covent Garden.
- Solid Roof Conservatories Ltd2026
- Solidry Damp Proofing Ltd2022
- Spacestruct Ltd2025
- Stirling Installations Limited2018
- Storm Seal Ltd2025
- Sunshine Bim360 Limited2021
- Superior Home Solutions Limited2024
- Surrey Windows & Glass Ltd2026
All installation companies (insulation, lifts, shutters and similar) in Covent Garden · All trades in Covent Garden · Installers across the UK
Frequently asked questions
When are SJL Maintenance Ltd's accounts due?
SJL Maintenance Ltd's next accounts are due at Companies House by 20 December 2027 (in 433 days), covering the period to 31 March 2027.
When is SJL Maintenance Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 19 March 2027, due by 19 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is SJL Maintenance Ltd still trading?
SJL Maintenance 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 SJL Maintenance Ltd do?
SJL Maintenance Ltd is registered under Other construction installation (SIC 43290); Plastering (SIC 43310); Other building completion and finishing (SIC 43390); Roofing activities (SIC 43910).
How old is SJL Maintenance Ltd?
SJL Maintenance Ltd was incorporated on 20 March 2026, less than a year ago.
What is the penalty if SJL Maintenance 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 SJL Maintenance 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.