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- Sedoy Ltd
Company profile · Installers
Sedoy Ltd
Sedoy Ltd is a newly incorporated private limited company registered in Colchester, company number 17137855, one of 113 installation companies (insulation, lifts, shutters and similar) in Colchester. Its next accounts are due at Companies House on 6 January 2028, and its first CT600 is due at HMRC on 5 April 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 Sedoy Ltd is registered
The registered office is in Colchester (CO6), in the Colchester local authority area, East of England. Show CO6 1NE on a map.
Other trade companies in CO6
- RKPR Commercial Roofing LtdRoofers
- GGS Infrastructure LtdCivil engineering
- Fordham Eco Park LtdProperty developers
- PNS Architectural Glazing Specialists LtdGlaziers
- Caddytech Conversions LtdMechanics and garages
- Jeri Construction LimitedBuilders
- KHC Contracts LimitedBuilders
- Colne Valley Motor Company LimitedMotor traders
Also registered at this address
1 other company uses the same registered office as Sedoy Ltd.
- NB Fantastic Cleaning LtdCleaning companies
What happens if Sedoy 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 6 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 Jan 2028 to 6 Feb 2028 | £150 |
| 1 to 3 months late | 7 Feb 2028 to 6 Apr 2028 | £375 |
| 3 to 6 months late | 7 Apr 2028 to 6 Jul 2028 | £750 |
| More than 6 months late | From 7 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 17137855
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 April 2026
- Registered office
- 49 Godmans Lane, Marks Tey, Colchester, CO6 1NE
- Nature of business
- Other construction installation (SIC 43290)
Joinery installation (SIC 43320) - Year end
- 30 April (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 Colchester
Other active installation companies (insulation, lifts, shutters and similar) registered in Colchester.
- Shelton Construction Services Ltd2016
- Site Fabrications Limited2009
- SLM Home Improvements Ltd2024
- Southgate Builders Ltd2025
- Stour Windows Limited1982
- Styne Greenhouses Ltd2022
- STZ Limited2023
- Tec Construction (East Anglia) Limited2021
All installation companies (insulation, lifts, shutters and similar) in Colchester · All trades in Colchester · Installers across the UK
Frequently asked questions
When are Sedoy Ltd's accounts due?
Sedoy Ltd's next accounts are due at Companies House by 6 January 2028 (in 451 days), covering the period to 30 April 2027.
When is Sedoy 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 5 April 2027, due by 5 April 2028, and one for the period to 30 April 2027, due by 30 April 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sedoy Ltd still trading?
Sedoy 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 Sedoy Ltd do?
Sedoy Ltd is registered under Other construction installation (SIC 43290); Joinery installation (SIC 43320).
How old is Sedoy Ltd?
Sedoy Ltd was incorporated on 6 April 2026, less than a year ago.
What is the penalty if Sedoy 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 Sedoy 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.