- Companies
- Plumbers and heating engineers
- Mountain Ash
- R&D Sprinklers Limited
R&D Sprinklers Limited
- Company number
- 17068525
- Incorporated
- 3 Mar 2026
- Registered office
- 22 Oxford Street, Mountain Ash, CF45 3PL
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation; Wholesale of hardware, plumbing and heating equipment and supplies
R&D Sprinklers Limited is a newly incorporated private limited company registered in Mountain Ash, company number 17068525, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 3 December 2027, and its first CT600 is due at HMRC on 2 March 2028.
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.
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Who runs and owns R&D Sprinklers Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| R*** K*** | Director | Mar 2026 |
People with significant control (2)
Where R&D Sprinklers Limited is registered
The registered office is in Mountain Ash (CF45), in the Rhondda Cynon Taf local authority area, Wales. Show CF45 3PL on a map.
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Also registered at this address
2 other companies use the same registered office as R&D Sprinklers Limited.
- Air Jointing LimitedCivil engineering
- M&Econnect LimitedElectricians
What happens if R&D Sprinklers 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 3 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 4 Dec 2027 to 3 Jan 2028 | £150 |
| 1 to 3 months late | 4 Jan 2028 to 3 Mar 2028 | £375 |
| 3 to 6 months late | 4 Mar 2028 to 3 Jun 2028 | £750 |
| More than 6 months late | From 4 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 17068525
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 March 2026
- Registered office
- 22 Oxford Street, Mountain Ash, CF45 3PL
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290)
Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740) - Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Mountain Ash
Other active plumbing and heating companies registered in Mountain Ash.
All plumbing and heating companies in Mountain Ash · All trades in Mountain Ash · Plumbers and heating engineers across the UK
Frequently asked questions
When are R&D Sprinklers Limited's accounts due?
R&D Sprinklers Limited's next accounts are due at Companies House by 3 December 2027 (in 415 days), covering the period to 31 March 2027.
When is R&D Sprinklers Limited'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 March 2027, due by 2 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is R&D Sprinklers Limited still trading?
R&D Sprinklers 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 R&D Sprinklers Limited do?
R&D Sprinklers Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290); Wholesale of hardware, plumbing and heating equipment and supplies (SIC 46740).
How old is R&D Sprinklers Limited?
R&D Sprinklers Limited was incorporated on 3 March 2026, less than a year ago.
Who runs R&D Sprinklers Limited?
R&D Sprinklers Limited has 1 active director, the longest-serving appointed in Mar 2026. Their names and service addresses are on the Companies House register.
Who owns R&D Sprinklers Limited?
2 people or companies have significant control of R&D Sprinklers Limited: an individual (owns 50% to 75% of the shares); Iapr Limited (owns 25% to 50% of the shares).
What is the penalty if R&D Sprinklers 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 R&D Sprinklers 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.