- Companies
- Plumbers and heating engineers
- Cardiff
- Platinum Mechanical & Plumbing Services Limited
Platinum Mechanical & Plumbing Services Limited
- Company number
- 12164333
- Incorporated
- 19 Aug 20197 years trading
- Registered office
- East Moors House, Nettlefold Road, Cardiff, CF24 5JQ
- Nature of business
- Plumbing, heat and air-conditioning installation
Platinum Mechanical & Plumbing Services Limited is a 7-year-old private limited company registered in Cardiff, company number 12164333, one of 170 plumbing and heating companies in Cardiff. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
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 Platinum Mechanical & Plumbing Services LimitedOr 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 up £21K (+30.8%) on the year before, to £89K.
- Net assets rose in 5 of 5 year-on-year comparisons on record.
- Current assets of £162K against £101K owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £89K | £81K | £162K | £101K | 2 |
| 31 Mar 2024 | £68K | £81K | £152K | £92K | 2 |
| 31 Mar 2023 | £40K | £13K | £130K | £94K | 2 |
| 31 Mar 2022 | £23K | £931 | £109K | £92K | 2 |
| 31 Mar 2021 | £11K | £23K | £55K | £52K | 3 |
| 31 Mar 2020 | £6,961 | £18K | £24K | £29K | 1 |
Where Platinum Mechanical & Plumbing Services Limited is registered
The registered office is in Cardiff (CF24), in the Cardiff local authority area, Wales. Show CF24 5JQ on a map.
Other trade companies in CF24
- New Capital Tyres LtdMotor traders
- Beza Home Climate LtdPlumbers and heating engineers
- Jafa Construction LtdBuilders
- A R Lawn Care & Garden Services LtdLandscapers and gardeners
- RK Asset & Trading Co LtdMotor traders
- ZCC Garage LtdMechanics and garages
- Szot LtdPlasterers
- Oceanway Tyres LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as Platinum Mechanical & Plumbing Services Limited.
- Daffion 2019 LimitedProperty developers
What happens if Platinum Mechanical & Plumbing Services 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 12164333
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 August 2019 (7 years ago)
- Registered office
- East Moors House, Nettlefold Road, Cardiff, CF24 5JQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 18 August 2026
- Previous names
- C Williams Plumbing Limited (until 11 Sep 2019)
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 Cardiff
Other active plumbing and heating companies registered in Cardiff.
- Plumbfixer Ltd2023
- Plush Heating and Plumbing Ltd2023
- PLÖCHL Ltd2023
- Pro-Gas South Wales Limited2015
- Quartz Plumbing and Heating Ltd2022
- R Thomas Plumbing and Heating Ltd2012
- R.S. Gascare Ltd2013
- Rads and Taps Ltd2018
All plumbing and heating companies in Cardiff · All trades in Cardiff · Plumbers and heating engineers across the UK
Frequently asked questions
When are Platinum Mechanical & Plumbing Services Limited's accounts due?
Platinum Mechanical & Plumbing Services Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Platinum Mechanical & Plumbing Services Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Platinum Mechanical & Plumbing Services Limited still trading?
Platinum Mechanical & Plumbing Services 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 Platinum Mechanical & Plumbing Services Limited do?
Platinum Mechanical & Plumbing Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Platinum Mechanical & Plumbing Services Limited?
Platinum Mechanical & Plumbing Services Limited was incorporated on 19 August 2019, 7 years ago.
What is the penalty if Platinum Mechanical & Plumbing Services 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 Platinum Mechanical & Plumbing Services 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.