- Company number
- 13009228
- Incorporated
- 10 Nov 20205 years trading
- Registered office
- International House, 195 Wood Street, London, E17 3NU
- Nature of business
- Construction of domestic buildings; Electrical installation; Plumbing, heat and air-conditioning installation; Other construction installation
Rock and Hammer Ltd is a 5-year-old private limited company registered in London, company number 13009228, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 22 March 2028, and the CT600 for the period to 22 June 2027 is due at HMRC on 22 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Rock and Hammer LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 unchanged on the year before, at £0.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 7 years, 2021 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 22 Jun 2026 | £0 | £0 | 0 | ||
| 22 Jun 2025 | £0 | £22K | £24K | 2 | |
| 22 Jun 2024 | £0 | 0 | |||
| 22 Jun 2023 | £1 | ||||
| 22 Jun 2022 | £1 | ||||
| 15 Jun 2022 | £77K | £45K | £0 | 2 | |
| 30 Nov 2021 | £0 | £0 | £0 | 0 |
Where Rock and Hammer Ltd is registered
The registered office is in London (E17), in the Waltham Forest local authority area, London. Show E17 3NU on a map.
Other trade companies in E17
- MGB Auto Trading LtdMotor traders
- Spotless Behaviour LtdCleaning companies
- Addison & Vale Construction LtdBuilders
- Karina Business LtdInstallers
- Hazzi Automotive LtdMechanics and garages
- Zlatev Construction Service LimitedFinishing trades
- Zzzguard LtdBuilders
- Ok Estates & Developments LtdBuilders
What happens if Rock and Hammer 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 22 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 23 Mar 2028 to 22 Apr 2028 | £150 |
| 1 to 3 months late | 23 Apr 2028 to 22 Jun 2028 | £375 |
| 3 to 6 months late | 23 Jun 2028 to 22 Sep 2028 | £750 |
| More than 6 months late | From 23 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 23 Jun 2028 | £200 |
| 3 months late | 22 Sep 2028 | another £200 |
| 6 months late | 22 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 22 Jun 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
- 13009228
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2020 (5 years ago)
- Registered office
- International House, 195 Wood Street, London, E17 3NU
- Nature of business
- Construction of domestic buildings (SIC 41202)
Electrical installation (SIC 43210)
Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 22 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 22 June 2026
- Last confirmation statement
- 3 August 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Rock Golf Studios Ltd2026
- Rock Solid Construction Ltd2019
- Rockersworld Ltd2023
- Rockstead Construction Limited2025
- Rodana Maintenance and Construction Ltd2024
- Rodmans Building and Maintenance Ltd2018
- Rodof Limited2013
- Roebuck Ecobuild Limited2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Rock and Hammer Ltd's accounts due?
Rock and Hammer Ltd's next accounts are due at Companies House by 22 March 2028 (in 526 days), covering the period to 22 June 2027.
When is Rock and Hammer Ltd's CT600 due?
The CT600 for the period to 22 June 2027 is due at HMRC by 22 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 23 March 2028.
Is Rock and Hammer Ltd still trading?
Rock and Hammer 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 Rock and Hammer Ltd do?
Rock and Hammer Ltd is registered under Construction of domestic buildings (SIC 41202); Electrical installation (SIC 43210); Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is Rock and Hammer Ltd?
Rock and Hammer Ltd was incorporated on 10 November 2020, 5 years ago.
What is the penalty if Rock and Hammer 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 Rock and Hammer 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.