- Companies
- Plumbers and heating engineers
- Abingdon
- Adt Mechanical Ltd
Adt Mechanical Ltd
- Company number
- 16770619
- Incorporated
- 7 Oct 20251 year trading
- Registered office
- 46 Sadlers Court, Abingdon, OX14 2PA
- Nature of business
- Plumbing, heat and air-conditioning installation
Adt Mechanical Ltd is a 1-year-old private limited company registered in Abingdon, company number 16770619, one of 37 plumbing and heating companies in Abingdon. Its next accounts are due at Companies House on 7 July 2027, and its first CT600 is due at HMRC on 6 October 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Adt Mechanical Ltd is registered
The registered office is in Abingdon (OX14), in the Vale of White Horse local authority area, South East. Show OX14 2PA on a map.
Other trade companies in OX14
- Batemans Boilers & Bathrooms LtdPlumbers and heating engineers
- Flamingo Recovery LimitedMotor traders
- Abingdon MOT Centre LimitedMechanics and garages
- Oxford Air Holdings LimitedPlumbers and heating engineers
- George&Co.Estates LtdProperty developers
- Pym's Landscaping LimitedLandscapers and gardeners
- Christian Lucy Home & Property Services LtdBuilders
- Don Clean LimitedCleaning companies
What happens if Adt Mechanical 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 7 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 8 Jul 2027 to 7 Aug 2027 | £150 |
| 1 to 3 months late | 8 Aug 2027 to 7 Oct 2027 | £375 |
| 3 to 6 months late | 8 Oct 2027 to 7 Jan 2028 | £750 |
| More than 6 months late | From 8 Jan 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
- 16770619
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2025 (1 year ago)
- Registered office
- 46 Sadlers Court, Abingdon, OX14 2PA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
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 Abingdon
Other active plumbing and heating companies registered in Abingdon.
- Agm Plumbing and Heating Limited2013
- Allen Plumbing and Heating Services Limited2012
- Batemans Boilers & Bathrooms Ltd2026
- BPMS (Oxford) Limited2025
- Briggs Plumbing & Heating Services Limited2019
- Casa (Oxford) Ltd2024
- CJMH Limited2015
- Commercial and Domestic Heat Pumps Ltd2025
All plumbing and heating companies in Abingdon · All trades in Abingdon · Plumbers and heating engineers across the UK
Frequently asked questions
When are Adt Mechanical Ltd's accounts due?
Adt Mechanical Ltd's next accounts are due at Companies House by 7 July 2027 (in 268 days), covering the period to 31 October 2026.
When is Adt Mechanical Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 6 October 2026, due by 6 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Adt Mechanical Ltd still trading?
Adt Mechanical 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 Adt Mechanical Ltd do?
Adt Mechanical Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Adt Mechanical Ltd?
Adt Mechanical Ltd was incorporated on 7 October 2025, 1 year ago.
What is the penalty if Adt Mechanical 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 Adt Mechanical 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.