- Companies
- Machinery repair and installation
- Thatcham
- Rock Building Services Group Ltd
Rock Building Services Group Ltd
- Company number
- 04022604
- Incorporated
- 27 Jun 200026 years trading
- Registered office
- Lindenmuth House, 37 Greenham Business Park, Thatcham, Berkshire, RG19 6HW
- Nature of business
- Repair of electrical equipment; Plumbing, heat and air-conditioning installation; Combined facilities support activities; Other business support service activities n.e.c.
Rock Building Services Group Ltd is a 26-year-old private limited company registered in Thatcham, company number 04022604, one of 13 machinery repair and installation companies in Thatcham. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £32K (+226.9%) on the year before, to £46K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £222K against £149K owed within a year: 1.5 times cover.
- 5 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 Jul 2025 | £46K | £222K | £149K | 5 | |
| 31 Jul 2024 | £14K | £122K | £89K | 5 | |
| 31 Jul 2023 | £25K | £161K | £124K | 6 | |
| 31 Jul 2022 | £5,812 | £107K | £85K | 5 | |
| 31 Jul 2021 | £63K | £152K | £86K | 4 | |
| 31 Jul 2020 | £39K | £79K | £43K | 5 | |
| 31 Jul 2019 | £29K | £80K | £42K | 4 | |
| 31 Jul 2018 | £28K | £48K | £23K | ||
| 31 Jul 2017 | £13K | £38K | £26K | ||
| 31 Jul 2016 | £20K | £2,632 | £59K | £40K |
Where Rock Building Services Group Ltd is registered
The registered office is in Thatcham (RG19), in the West Berkshire local authority area, South East. Show RG19 6HW on a map.
Other trade companies in RG19
- Envision Autos LtdMechanics and garages
- Mra Road Logistics LtdMechanics and garages
- Civic Contracting Group LimitedElectricians
- Kingston Home & Property Care LtdInstallers
- Jewels Brickwork LtdBuilders
- Notelppa Capital Group LtdProperty developers
- Adal Studio LtdLandscapers and gardeners
- Clean Start Solutions LtdCleaning companies
Shared registered office
29 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Rock Building Services Group 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 04022604
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 June 2000 (26 years ago)
- Registered office
- Lindenmuth House, 37 Greenham Business Park, Thatcham, Berkshire, RG19 6HW
- Nature of business
- Repair of electrical equipment (SIC 33140)
Plumbing, heat and air-conditioning installation (SIC 43220)
Combined facilities support activities (SIC 81100)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 17 March 2026
- Charges (mortgages)
- 2 outstanding of 3 registered
- Previous names
- Cool Solutions Management Ltd (until 22 Dec 2021)
PJW Refrigeration and Air-Conditioning Limited (until 11 Feb 2020)
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Thatcham
Other active machinery repair and installation companies registered in Thatcham.
- Techpro Solutions Limited2004
- Ajb Electrical Contracting Ltd2011
- BPS Leisure Limited1996
- Central Conveyor Belting Services Ltd1986
- Cheftec Ltd2016
- Dean White Marine Consultancy Limited2003
- Drive Line Marine Limited1994
- First Point of Cool Ltd2023
All machinery repair and installation companies in Thatcham · All trades in Thatcham · Machinery repair and installation across the UK
Frequently asked questions
When are Rock Building Services Group Ltd's accounts due?
Rock Building Services Group Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Rock Building Services Group Ltd's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Rock Building Services Group Ltd still trading?
Rock Building Services Group 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 Building Services Group Ltd do?
Rock Building Services Group Ltd is registered under Repair of electrical equipment (SIC 33140); Plumbing, heat and air-conditioning installation (SIC 43220); Combined facilities support activities (SIC 81100); Other business support service activities n.e.c. (SIC 82990).
How old is Rock Building Services Group Ltd?
Rock Building Services Group Ltd was incorporated on 27 June 2000, 26 years ago.
What is the penalty if Rock Building Services Group 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 Building Services Group 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.