- Company number
- 16838450
- Incorporated
- 7 Nov 2025
- Registered office
- 186 the Knares, Basildon, SS16 5SS
- Nature of business
- Glazing; Other service activities n.e.c.
Sid Concept Ltd is a newly incorporated private limited company registered in Basildon, company number 16838450, one of 19 glazing companies in Basildon. Its next accounts are due at Companies House on 7 August 2027, and its first CT600 is due at HMRC on 6 November 2027.
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.
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Where Sid Concept Ltd is registered
The registered office is in Basildon (SS16), in the Basildon local authority area, East of England. Show SS16 5SS on a map.
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What happens if Sid Concept 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 7 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Aug 2027 to 7 Sep 2027 | £150 |
| 1 to 3 months late | 8 Sep 2027 to 7 Nov 2027 | £375 |
| 3 to 6 months late | 8 Nov 2027 to 7 Feb 2028 | £750 |
| More than 6 months late | From 8 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 16838450
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 November 2025
- Registered office
- 186 the Knares, Basildon, SS16 5SS
- Nature of business
- Glazing (SIC 43342)
Other service activities n.e.c. (SIC 96090) - Year end
- 30 November (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for glazing companies
Glazing companies often take deposits before work starts. Deposits held at the year end are a liability, not income, until the job is done.
Similar companies in Basildon
Other active glazing companies registered in Basildon.
- Softim UK Ltd2019
- Tudormay Facades Ltd2022
- Upper Glass Conservatories Limited2005
- Vetroco Ltd2012
- Alu Works Limited2024
- Ask Double Glazing Ltd2025
- Clarke's Windows Doors & Conservatories Ltd2010
- Clearpane Windows Ltd2026
All glazing companies in Basildon · All trades in Basildon · Glaziers across the UK
Frequently asked questions
When are Sid Concept Ltd's accounts due?
Sid Concept Ltd's next accounts are due at Companies House by 7 August 2027 (in 299 days), covering the period to 30 November 2026.
When is Sid Concept 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 6 November 2026, due by 6 November 2027, and one for the period to 30 November 2026, due by 30 November 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sid Concept Ltd still trading?
Sid Concept 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 Sid Concept Ltd do?
Sid Concept Ltd is registered under Glazing (SIC 43342); Other service activities n.e.c. (SIC 96090).
How old is Sid Concept Ltd?
Sid Concept Ltd was incorporated on 7 November 2025, less than a year ago.
What is the penalty if Sid Concept 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 Sid Concept 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.