- Companies
- Plumbers and heating engineers
- Gillingham
- A D Millar Plumbing Ltd
A D Millar Plumbing Ltd
- Company number
- 13037589
- Incorporated
- 23 Nov 20205 years trading
- Registered office
- 8 Rolvenden Avenue, Gillingham, Kent, ME8 6SH
- Nature of business
- Plumbing, heat and air-conditioning installation
A D Millar Plumbing Ltd is a 5-year-old private limited company registered in Gillingham, company number 13037589, one of 92 plumbing and heating companies in Gillingham. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 2027.
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 £11 (-17.5%) on the year before, to £52.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £10K against £10K owed within a year: 1.0 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £52 | £350 | £10K | £10K | 1 |
| 30 Nov 2024 | £63 | £2,702 | £8,389 | £11K | 1 |
| 30 Nov 2023 | £6,009 | £15K | £15K | £12K | 1 |
| 30 Nov 2022 | £8,023 | £11K | £11K | £5,186 | 1 |
| 30 Nov 2021 | £232 | £386 | £154 | 0 |
Who runs and owns A D Millar 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*** M*** | Director | Nov 2020 |
Person with significant control
Where A D Millar Plumbing Ltd is registered
The registered office is in Gillingham (ME8), in the Medway local authority area, South East. Show ME8 6SH on a map.
Other trade companies in ME8
- National Fire Services LimitedElectricians
- TC Mechanical Engineering LtdMechanics and garages
- Reset and Refresh Kent LtdCleaning companies
- Primestone Surfacing LtdCivil engineering
- GMS Autos LtdMechanics and garages
- Mmu Design & Build LtdFinishing trades
- Jpe Drylining LtdPlasterers
- Quick Clean Kent LtdCleaning companies
What happens if A D Millar 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 13037589
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 November 2020 (5 years ago)
- Registered office
- 8 Rolvenden Avenue, Gillingham, Kent, ME8 6SH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 21 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 Gillingham
Other active plumbing and heating companies registered in Gillingham.
- A Thomas Plumbing & Heating Ltd2022
- A.M. Clements Limited2003
- Amberstew Ltd2007
- Ashby Heating Ltd2015
- Assiduous Heating Ltd2023
- Atg - Installations Ltd2020
- BHL Heating Hub Ltd2024
- Biddiscombe & Son Plumbing & Heating Ltd2013
All plumbing and heating companies in Gillingham · All trades in Gillingham · Plumbers and heating engineers across the UK
Frequently asked questions
When are A D Millar Plumbing Ltd's accounts due?
A D Millar Plumbing Ltd's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is A D Millar Plumbing Ltd's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is A D Millar Plumbing Ltd still trading?
A D Millar 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 Millar Plumbing Ltd do?
A D Millar Plumbing Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is A D Millar Plumbing Ltd?
A D Millar Plumbing Ltd was incorporated on 23 November 2020, 5 years ago.
Who runs A D Millar Plumbing Ltd?
A D Millar Plumbing Ltd has 1 active director, the longest-serving appointed in Nov 2020. Their names and service addresses are on the Companies House register.
Who owns A D Millar Plumbing Ltd?
One person or company has significant control of A D Millar Plumbing Ltd: an individual (owns 75% or more of the shares).
What is the penalty if A D Millar 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 Millar 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.