- Companies
- Plumbers and heating engineers
- York
- Alt Plumbing Ltd
Alt Plumbing Ltd
- Company number
- 16660101
- Incorporated
- 19 Aug 20251 year trading
- Registered office
- 57 Barons Crescent, Copmanthorpe, York, YO23 3TZ
- Nature of business
- Plumbing, heat and air-conditioning installation
Alt Plumbing Ltd is a 1-year-old private limited company registered in York, company number 16660101, one of 123 plumbing and heating companies in York. Its next accounts are due at Companies House on 19 May 2027, and its first CT600 is due at HMRC on 18 August 2027.
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.
Is this your company?
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Where Alt Plumbing Ltd is registered
The registered office is in York (YO23), in the York local authority area, Yorkshire and The Humber. Show YO23 3TZ on a map.
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What happens if Alt 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 19 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 May 2027 to 19 Jun 2027 | £150 |
| 1 to 3 months late | 20 Jun 2027 to 19 Aug 2027 | £375 |
| 3 to 6 months late | 20 Aug 2027 to 19 Nov 2027 | £750 |
| More than 6 months late | From 20 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 16660101
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 August 2025 (1 year ago)
- Registered office
- 57 Barons Crescent, Copmanthorpe, York, YO23 3TZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 18 August 2026
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 York
Other active plumbing and heating companies registered in York.
- Am Kelsey Limited2003
- Ams Heating Limited2013
- Andrew Beatson Plumbing and Heating Limited2016
- Aqua Solutions North Yorkshire Ltd2024
- Aqualogic Heating & Plumbing Ltd2026
- Armadillo Heating Ltd2024
- Armadillo Plumbing Ltd2006
- Atkin Plumbing Supplies Ltd2025
All plumbing and heating companies in York · All trades in York · Plumbers and heating engineers across the UK
Frequently asked questions
When are Alt Plumbing Ltd's accounts due?
Alt Plumbing Ltd's next accounts are due at Companies House by 19 May 2027 (in 218 days), covering the period to 31 August 2026.
When is Alt 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 18 August 2026, due by 18 August 2027, and one for the period to 31 August 2026, due by 31 August 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Alt Plumbing Ltd still trading?
Alt 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 Alt Plumbing Ltd do?
Alt Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Alt Plumbing Ltd?
Alt Plumbing Ltd was incorporated on 19 August 2025, 1 year ago.
What is the penalty if Alt 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 Alt 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.