- Companies
- Specialist contractors
- Sheffield
- Spartan Ductwork Limited
Spartan Ductwork Limited
- Company number
- 16975395
- Incorporated
- 20 Jan 2026
- Registered office
- Unit 5 Kingfisher Works, Neepsend Lane, Sheffield, South Yorkshire, S3 8AU
- Nature of business
- Other specialised construction activities n.e.c.
Spartan Ductwork Limited is a newly incorporated private limited company registered in Sheffield, company number 16975395, one of 267 specialist construction companies in Sheffield. Its next accounts are due at Companies House on 20 October 2027, and its first CT600 is due at HMRC on 19 January 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.
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Where Spartan Ductwork Limited is registered
The registered office is in Sheffield (S3), in the Sheffield local authority area, Yorkshire and The Humber. Show S3 8AU on a map.
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What happens if Spartan Ductwork 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 20 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Oct 2027 to 20 Nov 2027 | £150 |
| 1 to 3 months late | 21 Nov 2027 to 20 Jan 2028 | £375 |
| 3 to 6 months late | 21 Jan 2028 to 20 Apr 2028 | £750 |
| More than 6 months late | From 21 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 16975395
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 January 2026
- Registered office
- Unit 5 Kingfisher Works, Neepsend Lane, Sheffield, South Yorkshire, S3 8AU
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
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 Sheffield
Other active specialist construction companies registered in Sheffield.
- Square Pebble Limited2006
- ST Con Services Ltd2017
- Steel City Pointing Ltd2019
- Steel City Surfacing Ltd2022
- Stele Structures Ltd2014
- Superior Access Methods Ltd2020
- Surescope Property Ltd2026
- T A Paving Ltd2011
All specialist construction companies in Sheffield · All trades in Sheffield · Specialist contractors across the UK
Frequently asked questions
When are Spartan Ductwork Limited's accounts due?
Spartan Ductwork Limited's next accounts are due at Companies House by 20 October 2027 (in 372 days), covering the period to 31 January 2027.
When is Spartan Ductwork 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 19 January 2027, due by 19 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Spartan Ductwork Limited still trading?
Spartan Ductwork 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 Spartan Ductwork Limited do?
Spartan Ductwork Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Spartan Ductwork Limited?
Spartan Ductwork Limited was incorporated on 20 January 2026, less than a year ago.
What is the penalty if Spartan Ductwork 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 Spartan Ductwork 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.