- Companies
- Plumbers and heating engineers
- Norwich
- William Carter Plumbing and Heating Ltd
William Carter Plumbing and Heating Ltd
- Company number
- 09549718
- Incorporated
- 20 Apr 201511 years trading
- Registered office
- 28 Catton Chase, Norwich, NR6 7AS
- Nature of business
- Plumbing, heat and air-conditioning installation
William Carter Plumbing and Heating Ltd is a 11-year-old private limited company registered in Norwich, company number 09549718, one of 252 plumbing and heating companies in Norwich. Its next accounts are due at Companies House on 31 January 2028, and the CT600 for the period to 30 April 2027 is due at HMRC on 30 April 2028.
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 down £4,021 (-7.1%) on the year before, to £52K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £62K against £15K owed within a year: 4.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2026 | £52K | £62K | £15K | 1 | |
| 30 Apr 2025 | £56K | £59K | £8,532 | 1 | |
| 30 Apr 2024 | £51K | £48K | £5,095 | 1 | |
| 30 Apr 2023 | £54K | £58K | £15K | 1 | |
| 30 Apr 2022 | £38K | £23K | £47K | £19K | 0 |
| 30 Apr 2021 | £22K | £21K | £36K | £29K | 0 |
| 30 Apr 2020 | £1,154 | £6,453 | £8,731 | £26K | 0 |
| 30 Apr 2019 | £654 | £5,763 | £7,719 | £26K | |
| 30 Apr 2018 | £1,485 | £10K | £16K | £40K | |
| 30 Apr 2017 | £3,078 | £8,808 | £19K | £16K |
Where William Carter Plumbing and Heating Ltd is registered
The registered office is in Norwich (NR6), in the Broadland local authority area, East of England. Show NR6 7AS on a map.
Other trade companies in NR6
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- Powder Craft LtdMechanics and garages
- Norwich Cars LtdMotor traders
- Vision Decorating LimitedPainters and decorators
- Vehicle Service Plus LtdMechanics and garages
- Ultra Glazing Solutions LimitedGlaziers
- Tidy Hands LtdCleaning companies
What happens if William Carter Plumbing and Heating 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 31 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2028 to 29 Feb 2028 | £150 |
| 1 to 3 months late | 1 Mar 2028 to 30 Apr 2028 | £375 |
| 3 to 6 months late | 1 May 2028 to 31 Jul 2028 | £750 |
| More than 6 months late | From 1 Aug 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2028 | £200 |
| 3 months late | 30 Jul 2028 | another £200 |
| 6 months late | 30 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 09549718
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 April 2015 (11 years ago)
- Registered office
- 28 Catton Chase, Norwich, NR6 7AS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2026
- Last confirmation statement
- 19 April 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 Norwich
Other active plumbing and heating companies registered in Norwich.
- Wise Plumbing Ltd2024
- Wright Renewables Ltd2014
- Wroxham Heating Ltd2011
- WWS Plumbing and Heating Limited2013
- 247 Oil & Gas Ltd2025
- A & S Cooling Services Limited2009
- A B Dack Plumbing and Heating Limited2019
- A J Syder Plumbing & Heating Ltd2013
All plumbing and heating companies in Norwich · All trades in Norwich · Plumbers and heating engineers across the UK
Frequently asked questions
When are William Carter Plumbing and Heating Ltd's accounts due?
William Carter Plumbing and Heating Ltd's next accounts are due at Companies House by 31 January 2028 (in 475 days), covering the period to 30 April 2027.
When is William Carter Plumbing and Heating Ltd's CT600 due?
The CT600 for the period to 30 April 2027 is due at HMRC by 30 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2028.
Is William Carter Plumbing and Heating Ltd still trading?
William Carter Plumbing and Heating 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 William Carter Plumbing and Heating Ltd do?
William Carter Plumbing and Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is William Carter Plumbing and Heating Ltd?
William Carter Plumbing and Heating Ltd was incorporated on 20 April 2015, 11 years ago.
What is the penalty if William Carter Plumbing and Heating 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 William Carter Plumbing and Heating 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.