- Companies
- Specialist contractors
- Diss
- Rocmann Limited
Rocmann Limited
- Company number
- 13760348
- Incorporated
- 23 Nov 20214 years trading
- Registered office
- 100 Willbye Avenue, Diss, IP22 4NP
- Nature of business
- Other specialised construction activities n.e.c.; Wholesale of wood, construction materials and sanitary equipment; Other retail sale not in stores, stalls or markets; Other service activities n.e.c.
Rocmann Limited is a 4-year-old private limited company registered in Diss, company number 13760348, one of 21 specialist construction companies in Diss. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets down £747 (-13%) on the year before, to £5,005.
- Net assets rose in 1 of 3 year-on-year comparisons on record.
- Current assets of £19K against £19K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £5,005 | £1,838 | £19K | £19K | 1 |
| 30 Nov 2024 | £5,752 | -£3,241 | £15K | £17K | 1 |
| 30 Nov 2023 | £1,424 | £14K | £3,067 | 2 | |
| 30 Nov 2022 | £2,149 | £10K | £2,732 | 1 |
Where Rocmann Limited is registered
The registered office is in Diss (IP22), in the South Norfolk local authority area, East of England. Show IP22 4NP on a map.
Other trade companies in IP22
- Iris FM LimitedFacilities management
- Corinthian Commercials LimitedMotor traders
- Barnes Restoration Builders LtdBuilders
- The Range Care Co (East Anglia) LtdRepair services
- Threeways Estates LtdProperty developers
- T.G Snelling General Builders LtdBuilders
- GSM Contracting LtdCivil engineering
- Complete Treecare & Landscapes LtdLandscapers and gardeners
What happens if Rocmann 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 31 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 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
- 13760348
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 November 2021 (4 years ago)
- Registered office
- 100 Willbye Avenue, Diss, IP22 4NP
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Wholesale of wood, construction materials and sanitary equipment (SIC 46730)
Other retail sale not in stores, stalls or markets (SIC 47990)
Other service activities n.e.c. (SIC 96090) - Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 22 November 2025
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 Diss
Other active specialist construction companies registered in Diss.
- Roy Allen (Engineering) Limited1973
- Ryes Energy Ltd2013
- Tar and Chip Surfacing Ltd2022
- Taylor Wilson Solutions Ltd2010
- The Apr Company (UK) Ltd2016
- The Swimming Pond Company Limited2007
- Toby Rogers Property Services Ltd2025
- A G R Interiors Limited1981
All specialist construction companies in Diss · All trades in Diss · Specialist contractors across the UK
Frequently asked questions
When are Rocmann Limited's accounts due?
Rocmann Limited's next accounts are due at Companies House by 31 August 2027 (in 323 days), covering the period to 30 November 2026.
When is Rocmann Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Rocmann Limited still trading?
Rocmann 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 Rocmann Limited do?
Rocmann Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Wholesale of wood, construction materials and sanitary equipment (SIC 46730); Other retail sale not in stores, stalls or markets (SIC 47990); Other service activities n.e.c. (SIC 96090).
How old is Rocmann Limited?
Rocmann Limited was incorporated on 23 November 2021, 4 years ago.
What is the penalty if Rocmann 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 Rocmann 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.