- Companies
- Specialist contractors
- Nuneaton
- Rockwarm Insulation Limited
Rockwarm Insulation Limited
- Company number
- 01921893
- Incorporated
- 12 Jun 198541 years trading
- Registered office
- 4 Trident Business Park Holman Way, Nuneaton, Warwickshire, CV11 4PN
- Nature of business
- Other specialised construction activities n.e.c.
Rockwarm Insulation Limited is a 41-year-old private limited company registered in Nuneaton, company number 01921893, one of 56 specialist construction companies in Nuneaton. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 up £10K (+10.8%) on the year before, to £103K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £306K against £714K owed within a year: 0.4 times cover.
- 20 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £103K | £227K | £306K | £714K | 20 |
| 31 Dec 2024 | £93K | £456K | £849K | 20 | |
| 31 Dec 2023 | £55K | £516K | £898K | 20 | |
| 31 Dec 2022 | £54K | £498K | £743K | 20 | |
| 31 Dec 2021 | £32K | £488K | £640K | 19 | |
| 31 Dec 2020 | £6,191 | £310K | £350K | 15 | |
| 31 Dec 2019 | £5,715 | £131K | £179K | 8 | |
| 31 Dec 2018 | £4,423 | £61K | £219K | £231K | 13 |
| 31 Dec 2017 | £33K | £302K | £264K | ||
| 31 Dec 2016 | £29K | £84K | £189K | £181K | 20 |
Public contracts won
Rockwarm Insulation Limited has 4 public sector contract awards on record, from 2018 to 2025. Source: Contracts Finder and Find a Tender award notices. For 3 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. 2 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Nuneaton & Bedworth Borough Council1 award
- Bromford Housing Group Limited1 award
- Bromford1 award
- Coventry - Solihull - Warwickshire1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Nuneaton & Bedworth Borough Council | NUNCON - Home Upgrade Grant 2 - Fabric Energy Efficiency Measures (EEM) DPS 6245 | Ceiling, not shown | 1 Apr 2025 |
| Bromford Housing Group Limited | Internal and External Insulation Works | Ceiling, not shown | 27 Apr 2023 |
| Bromford | Loft & Cavity Wall Insulation and Associated Upgrade Works | Ceiling, not shown | 13 Nov 2018 |
| Coventry - Solihull - Warwickshire | COV - Warm and Healthy Homes for Disabled Householders - AWARD | 15 Jun 2018 |
Where Rockwarm Insulation Limited is registered
The registered office is in Nuneaton (CV11), in the Nuneaton and Bedworth local authority area, West Midlands. Show CV11 4PN on a map.
Other trade companies in CV11
- SKCR LimitedCleaning companies
- RM Gill Builders LimitedBuilders
- Home Spectrum Co. LtdMotor traders
- CCM Landscapes LtdLandscapers and gardeners
- Halo Epdm Roofing LtdBuilders
- Neale Civil Engineering LtdCivil engineering
- Berkleys Roofing & Building LtdBuilders
- Khroma Refinishing LtdMotor traders
What happens if Rockwarm Insulation 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 01921893
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 June 1985 (41 years ago)
- Registered office
- 4 Trident Business Park Holman Way, Nuneaton, Warwickshire, CV11 4PN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 4 June 2026
- Charges (mortgages)
- 3 outstanding of 3 registered
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 Nuneaton
Other active specialist construction companies registered in Nuneaton.
- SFP Group Ltd2016
- Smart Interior Contracts Limited2018
- SPV PJ Ltd2021
- Structured Staff Ltd2025
- The Handy Lot Ltd2024
- The Independent Stabilisation Company Limited2010
- UK Paving Stone Ltd2021
- Willow Park (Stoke Golding) Limited1994
All specialist construction companies in Nuneaton · All trades in Nuneaton · Specialist contractors across the UK
Frequently asked questions
When are Rockwarm Insulation Limited's accounts due?
Rockwarm Insulation Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Rockwarm Insulation Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Rockwarm Insulation Limited still trading?
Rockwarm Insulation 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 Rockwarm Insulation Limited do?
Rockwarm Insulation Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Rockwarm Insulation Limited?
Rockwarm Insulation Limited was incorporated on 12 June 1985, 41 years ago.
Has Rockwarm Insulation Limited won public sector contracts?
Yes. Rockwarm Insulation Limited has 4 contract awards from public bodies on Contracts Finder and Find a Tender, most recently from Nuneaton & Bedworth Borough Council.
What is the penalty if Rockwarm Insulation 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 Rockwarm Insulation 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.