- Companies
- Plumbers and heating engineers
- Carshalton
- A D Williams Plumbing Ltd
A D Williams Plumbing Ltd
- Company number
- 16028206
- Incorporated
- 18 Oct 20241 year trading
- Registered office
- 8 Salisbury Road, Carshalton, SM5 3HD
- Nature of business
- Plumbing, heat and air-conditioning installation
A D Williams Plumbing Ltd is a 1-year-old private limited company registered in Carshalton, company number 16028206, one of 35 plumbing and heating companies in Carshalton. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 October 2025, as filed at Companies House.
Who runs and owns A D Williams Plumbing Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| A*** W*** | Director | Oct 2024 |
Person with significant control
Where A D Williams Plumbing Ltd is registered
The registered office is in Carshalton (SM5), in the Sutton local authority area, London. Show SM5 3HD on a map.
Other trade companies in SM5
- Rich Detailz LtdMechanics and garages
- Sutton Motor and Garage LtdMechanics and garages
- Ecobuild Plumbing & Heating LtdPlumbers and heating engineers
- Aaircon Services LtdPlumbers and heating engineers
- Perthy Properties (Greenhills) LimitedProperty developers
- Jophp LimitedCleaning companies
- Pro-Type Roofing LtdRoofers
- Mic Cleaning LimitedCleaning companies
What happens if A D Williams 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 31 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16028206
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 October 2024 (1 year ago)
- Registered office
- 8 Salisbury Road, Carshalton, SM5 3HD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 17 October 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 Carshalton
Other active plumbing and heating companies registered in Carshalton.
- A2One Solutions Ltd2018
- Aaircon Services Ltd2026
- Aquaclima78 Limited2026
- Art&Co Plumbing Ltd2019
- Asset Plumbing & Heating Ltd2021
- Aurelia Group Ltd2018
- Axiom Plumbing and Heating Ltd2023
- Beeches Plumbing and Heating Limited2016
All plumbing and heating companies in Carshalton · All trades in Carshalton · Plumbers and heating engineers across the UK
Frequently asked questions
When are A D Williams Plumbing Ltd's accounts due?
A D Williams Plumbing Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is A D Williams Plumbing Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is A D Williams Plumbing Ltd still trading?
A D Williams 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 A D Williams Plumbing Ltd do?
A D Williams Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A D Williams Plumbing Ltd?
A D Williams Plumbing Ltd was incorporated on 18 October 2024, 1 year ago.
Who runs A D Williams Plumbing Ltd?
A D Williams Plumbing Ltd has 1 active director, the longest-serving appointed in Oct 2024. Their names and service addresses are on the Companies House register.
Who owns A D Williams Plumbing Ltd?
One person or company has significant control of A D Williams Plumbing Ltd: an individual (owns 75% or more of the shares).
What is the penalty if A D Williams 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 A D Williams 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.