- Companies
- Plumbers and heating engineers
- Waltham Cross
- Ad Mechanical, Plumbing & Heating Ltd
Ad Mechanical, Plumbing & Heating Ltd
- Company number
- 16031693
- Incorporated
- 21 Oct 20241 year trading
- Registered office
- 1 Junior Mews Russells Ride, Cheshunt, Waltham Cross, EN8 8UR
- Nature of business
- Plumbing, heat and air-conditioning installation
Ad Mechanical, Plumbing & Heating Ltd is a 1-year-old private limited company registered in Waltham Cross, company number 16031693, one of 63 plumbing and heating companies in Waltham Cross. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £2,479 (-23.5%) on the year before, to £8,073.
- Current assets of £5,958 against £388 owed within a year: more than 10 times cover.
- 3 employees on average, up from 1 the year before.
- Balance sheets on record for 2 years, 2025 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £8,073 | £5,958 | £388 | 3 | |
| 31 Mar 2025 | £11K | £13K | £3,005 | 1 |
Where Ad Mechanical, Plumbing & Heating Ltd is registered
The registered office is in Waltham Cross (EN8), in the Broxbourne local authority area, East of England. Show EN8 8UR on a map.
Other trade companies in EN8
- Elite Interior Finishes LtdInstallers
- Panalux Maintenance LimitedBuilders
- Auremont Construction LtdBuilders
- Toptier Cleaning Services LtdCleaning companies
- Olive Cooper Construction LtdBuilders
- Ar Projects & Developments LtdBuilders
- CTC Property Maintenance LimitedFinishing trades
- Nuto Electrical LtdElectricians
What happens if Ad Mechanical, Plumbing & 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16031693
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2024 (1 year ago)
- Registered office
- 1 Junior Mews Russells Ride, Cheshunt, Waltham Cross, EN8 8UR
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 20 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 Waltham Cross
Other active plumbing and heating companies registered in Waltham Cross.
- Ap Renewable Ltd2026
- Asm Plumbing & Maintenance Ltd2026
- Avelia Solutions Ltd2025
- B K M Utilities Limited2018
- B-Line Plumbing & Heating Ltd2012
- Bac Utilities & Properties Limited2018
- Black Gas Plumbing and Heating Ltd2025
- Building Services 4U Ltd2018
All plumbing and heating companies in Waltham Cross · All trades in Waltham Cross · Plumbers and heating engineers across the UK
Frequently asked questions
When are Ad Mechanical, Plumbing & Heating Ltd's accounts due?
Ad Mechanical, Plumbing & Heating Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Ad Mechanical, Plumbing & Heating Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Ad Mechanical, Plumbing & Heating Ltd still trading?
Ad Mechanical, Plumbing & 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 Ad Mechanical, Plumbing & Heating Ltd do?
Ad Mechanical, Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Ad Mechanical, Plumbing & Heating Ltd?
Ad Mechanical, Plumbing & Heating Ltd was incorporated on 21 October 2024, 1 year ago.
What is the penalty if Ad Mechanical, Plumbing & 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 Ad Mechanical, Plumbing & 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.