- Companies
- Plumbers and heating engineers
- Carmarthen
- Ark Plumbing Ltd
Ark Plumbing Ltd
- Company number
- 15292421
- Incorporated
- 17 Nov 20232 years trading
- Registered office
- 7 Conduit Lane, Carmarthen, SA31 1LD
- Nature of business
- Plumbing, heat and air-conditioning installation
Ark Plumbing Ltd is a 2-year-old private limited company registered in Carmarthen, company number 15292421, one of 30 plumbing and heating companies in Carmarthen. Its next accounts are due at Companies House on 28 November 2026, and its first CT600 is due at HMRC on 29 November 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2024
From the balance sheet at 29 November 2024, as filed at Companies House.
Where Ark Plumbing Ltd is registered
The registered office is in Carmarthen (SA31), in the Carmarthenshire local authority area, Wales. Show SA31 1LD on a map.
Other trade companies in SA31
- Revworks Studio LtdMechanics and garages
- Celf Construction LimitedPlasterers
- DCM Plant Hire LimitedSpecialist contractors
- M Owen Construction LtdBuilders
- Tce Construction LtdBuilders
- LW Pro Build LtdBuilders
- PW Solar LtdElectricians
- Mark Williams Carpets LimitedFloor and wall tilers
Also registered at this address
4 other companies use the same registered office as Ark Plumbing Ltd.
- GT & Son Services LtdCivil engineering
- Ldcqacq23 LtdElectricians
- Mares Landscaping LtdLandscapers and gardeners
- Parry and Son Builders (PSB) LtdBuilders
What happens if Ark Plumbing 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 28 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Nov 2026 to 28 Dec 2026 | £150 |
| 1 to 3 months late | 29 Dec 2026 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 28 May 2027 | £750 |
| More than 6 months late | From 29 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 15292421
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 November 2023 (2 years ago)
- Registered office
- 7 Conduit Lane, Carmarthen, SA31 1LD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 29 November 2024
- Last confirmation statement
- 16 November 2025
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 Carmarthen
Other active plumbing and heating companies registered in Carmarthen.
- Birdshill Biomass Ltd.2015
- Carmarthen Refrigeration Limited2003
- Chaps (HPS) Wales Ltd2021
- Craig Powell Limited2026
- Heatwise Gas and Plumbing Services Limited2021
- Hendre Heating Limited2024
- I.J. Morgan Heating & Renewables Ltd2019
- Intragas (Cardiff) Ltd2020
All plumbing and heating companies in Carmarthen · All trades in Carmarthen · Plumbers and heating engineers across the UK
Frequently asked questions
When are Ark Plumbing Ltd's accounts due?
Ark Plumbing Ltd's next accounts are due at Companies House by 28 November 2026 (in 46 days), covering the period to 28 February 2026.
When is Ark Plumbing Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 29 November 2025, due by 29 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ark Plumbing Ltd still trading?
Ark Plumbing 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 Ark Plumbing Ltd do?
Ark Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ark Plumbing Ltd?
Ark Plumbing Ltd was incorporated on 17 November 2023, 2 years ago.
What is the penalty if Ark Plumbing 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 Ark Plumbing 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.