- Companies
- Specialist contractors
- Grimsby
- Conmat Ltd
Conmat Ltd
- Company number
- 16363671
- Incorporated
- 3 Apr 20251 year trading
- Registered office
- Scomber House Market Place, Tetney, Grimsby, Lincolnshire, DN36 5NN
- Nature of business
- Other specialised construction activities n.e.c.
Conmat Ltd is a 1-year-old private limited company registered in Grimsby, company number 16363671, one of 102 specialist construction companies in Grimsby. Its next accounts are due at Companies House on 3 January 2027, and its first CT600 is due at HMRC on 2 April 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.
Is this your company?
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Where Conmat Ltd is registered
The registered office is in Grimsby (DN36), in the East Lindsey local authority area, East Midlands. Show DN36 5NN on a map.
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- Ultimate Civils LimitedCivil engineering
- K G Collins Roofing LtdRoofers
- Coops Autoneering LtdMechanics and garages
- Ibuild Projects LimitedProperty developers
- Humberside Power LimitedElectricians
- Home Fresh Property Maintenance LimitedFacilities management
- Home Fresh Professional Cleaning LimitedCleaning companies
What happens if Conmat 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 3 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Jan 2027 to 3 Feb 2027 | £150 |
| 1 to 3 months late | 4 Feb 2027 to 3 Apr 2027 | £375 |
| 3 to 6 months late | 4 Apr 2027 to 3 Jul 2027 | £750 |
| More than 6 months late | From 4 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 16363671
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 April 2025 (1 year ago)
- Registered office
- Scomber House Market Place, Tetney, Grimsby, Lincolnshire, DN36 5NN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 April (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 2 April 2026
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 Grimsby
Other active specialist construction companies registered in Grimsby.
- Cox Industrial Services Ltd2023
- CS Access and Coatings Limited2025
- Cuff & Co Limited2003
- D B Groundworks (Gy) Limited2011
- D Tominey Ltd2023
- Dexie Ltd2025
- Dillon Turbines Limited2023
- DJW Ropes Ltd2023
All specialist construction companies in Grimsby · All trades in Grimsby · Specialist contractors across the UK
Frequently asked questions
When are Conmat Ltd's accounts due?
Conmat Ltd's next accounts are due at Companies House by 3 January 2027 (in 82 days), covering the period to 30 April 2026.
When is Conmat 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 2 April 2026, due by 2 April 2027, and one for the period to 30 April 2026, due by 30 April 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Conmat Ltd still trading?
Conmat 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 Conmat Ltd do?
Conmat Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Conmat Ltd?
Conmat Ltd was incorporated on 3 April 2025, 1 year ago.
What is the penalty if Conmat 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 Conmat 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.