- Companies
- Plumbers and heating engineers
- Mexborough
- William Duce Limited
William Duce Limited
- Company number
- 04758199
- Incorporated
- 9 May 200323 years trading
- Registered office
- Unit 4B Swinton Meadows Industrial Estate, Swinton, Mexborough, S64 8AB
- Nature of business
- Plumbing, heat and air-conditioning installation
William Duce Limited is a 23-year-old private limited company registered in Mexborough, company number 04758199, one of 23 plumbing and heating companies in Mexborough. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 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 up £167K (+55.2%) on the year before, to £469K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £818K against £466K owed within a year: 1.8 times cover.
- 12 employees on average during the year.
- Balance sheets on record for 8 years, 2019 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £469K | £307K | £818K | £466K | 12 |
| 31 May 2025 | £302K | £77K | £447K | £216K | 12 |
| 31 May 2024 | £575K | £261K | £743K | £257K | -13 |
| 31 May 2023 | £527K | £88K | £713K | £267K | -13 |
| 31 May 2022 | £479K | £210K | £748K | £369K | -13 |
| 31 May 2021 | £243K | £77K | £565K | £336K | 13 |
| 31 May 2020 | £265K | £233K | £362K | £162K | 13 |
| 31 May 2019 | £272K | £178K | £440K | £219K | 13 |
Where William Duce Limited is registered
The registered office is in Mexborough (S64), in the Rotherham local authority area, Yorkshire and The Humber. Show S64 8AB on a map.
Other trade companies in S64
- SB’S Home Improvements LtdRepair services
- S J Croome Construction LtdInstallers
- Sourc LtdElectricians
- Arc Building & Interiors LtdInstallers
- 3P Project Solutions LimitedSpecialist contractors
- A&H Tyres LtdMotor traders
- Northdale Construction LtdBuilders
- A.J.W Plumbing & Heating Northern LtdPlumbers and heating engineers
What happens if William Duce 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 04758199
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 May 2003 (23 years ago)
- Registered office
- Unit 4B Swinton Meadows Industrial Estate, Swinton, Mexborough, S64 8AB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 9 May 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 Mexborough
Other active plumbing and heating companies registered in Mexborough.
- Wink's PHG Ltd2024
- A.J.W Plumbing & Heating Northern Ltd2026
- Chesman Underfloor Heating Ltd2022
- Craig Hickin Plumbing & Heating Ltd2012
- Ellershaw Plumbing and Heating Ltd2016
- Excel Mechanical Contracting Limited2012
- Future Flow Heating Ltd2021
- Gas Wright Plumbing & Heating Ltd2021
All plumbing and heating companies in Mexborough · All trades in Mexborough · Plumbers and heating engineers across the UK
Frequently asked questions
When are William Duce Limited's accounts due?
William Duce Limited's next accounts are due at Companies House by 29 February 2028 (in 505 days), covering the period to 31 May 2027.
When is William Duce Limited's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is William Duce Limited still trading?
William Duce 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 William Duce Limited do?
William Duce Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is William Duce Limited?
William Duce Limited was incorporated on 9 May 2003, 23 years ago.
What is the penalty if William Duce 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 William Duce 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.