- Company number
- 10144661
- Incorporated
- 25 Apr 201610 years trading
- Registered office
- Pen Yr Ynys, Llanfairynghornwy, Holyhead, Ynys Mon, LL65 4LS
- Nature of business
- Construction of domestic buildings
A T Jones Building & Damp Proofing Ltd is a 10-year-old private limited company registered in Holyhead, company number 10144661, one of 10 building contractors in Holyhead. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 29 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 £5,177 (-367.2%) on the year before, to -£3,767.
- Net assets rose in 5 of 8 year-on-year comparisons on record.
- Current assets of £1,042 against £36K owed within a year: 0.0 times cover.
- 1 employee on average, up from 0 the year before.
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 29 Mar 2025 | -£3,767 | £1,042 | £36K | 1 | |
| 29 Mar 2024 | £1,410 | £5,431 | £29K | 0 | |
| 29 Mar 2023 | £1,960 | £21K | £44K | 1 | |
| 29 Mar 2022 | -£1,260 | £21K | £48K | 1 | |
| 29 Mar 2021 | -£2,622 | £13K | £41K | 1 | |
| 29 Mar 2020 | £2,412 | £14K | £38K | 1 | |
| 31 Mar 2019 | £1,399 | £4,307 | £27K | 0 | |
| 31 Mar 2018 | £26 | £5,301 | £36K | ||
| 31 Mar 2017 | £1 | £1 |
Where A T Jones Building & Damp Proofing Ltd is registered
The registered office is in Holyhead (LL65), in the Isle of Anglesey local authority area, Wales. Show LL65 4LS on a map.
Other trade companies in LL65
- Guy B Electrical LtdElectricians
- Ellis Property & Holdings LtdProperty developers
- Spotless Stay Cleaning LimitedCleaning companies
- Gwasanaethu Adeiladu Cyflawn CyfGroundworks and demolition
- Joclean’S Cleaning Company Ltd.Cleaning companies
- Arctic Blast Cleaning Solutions LtdCleaning companies
- Cybicleaningservices LtdCleaning companies
- Parkinson Plumbing and Heating LtdPlumbers and heating engineers
What happens if A T Jones Building & Damp Proofing 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
- 10144661
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 April 2016 (10 years ago)
- Registered office
- Pen Yr Ynys, Llanfairynghornwy, Holyhead, Ynys Mon, LL65 4LS
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 29 March 2025
- Last confirmation statement
- 23 April 2026
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Holyhead
Other active building contractors registered in Holyhead.
- B.C. Services (Anglesey) Limited2004
- Coast Construction Ynys Mon Limited2020
- Draig Goch Limited2017
- Edward Construction Services Ltd2001
- Hughes Construction (Anglesey) Ltd2014
- Ingram Property Development Limited2003
- JCM Construction Anglesey Limited2021
- R Mills, Daughter & Son Ltd2005
All building contractors in Holyhead · All trades in Holyhead · Builders across the UK
Frequently asked questions
When are A T Jones Building & Damp Proofing Ltd's accounts due?
A T Jones Building & Damp Proofing 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 A T Jones Building & Damp Proofing 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 29 March 2026, due by 29 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is A T Jones Building & Damp Proofing Ltd still trading?
A T Jones Building & Damp Proofing 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 T Jones Building & Damp Proofing Ltd do?
A T Jones Building & Damp Proofing Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is A T Jones Building & Damp Proofing Ltd?
A T Jones Building & Damp Proofing Ltd was incorporated on 25 April 2016, 10 years ago.
What is the penalty if A T Jones Building & Damp Proofing 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 T Jones Building & Damp Proofing 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.