- Companies
- Plumbers and heating engineers
- Ipswich
- A.J.Thomson Ltd
A.J.Thomson Ltd
- Company number
- 05737092
- Incorporated
- 9 Mar 200620 years trading
- Registered office
- C/O RSZ Accountancy Archdeacon House, Northgate Street, Ipswich, Suffolk, IP1 3BX
- Nature of business
- Plumbing, heat and air-conditioning installation; Floor and wall covering
A.J.Thomson Ltd is a 20-year-old private limited company registered in Ipswich, company number 05737092, one of 130 plumbing and heating companies in Ipswich. 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 £18K (-86.4%) on the year before, to £2,837.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £41K against £46K owed within a year: 0.9 times cover.
- 4 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £2,837 | £41K | £46K | 4 | |
| 31 Mar 2024 | £21K | £44K | £37K | 4 | |
| 31 Mar 2023 | £16K | £40K | £41K | 6 | |
| 31 Mar 2022 | £11K | £43K | £53K | £55K | 8 |
| 31 Mar 2021 | £17K | £55K | £59K | 10 | |
| 31 Mar 2020 | -£14K | -£26K | £32K | 6 | |
| 31 Mar 2019 | -£26K | -£39K | £19K | ||
| 31 Mar 2018 | £16K | £31K | £21K | 3 | |
| 31 Mar 2017 | £1,370 | £12K | £16K | ||
| 31 Mar 2016 | £10K | £20K | £14K |
Where A.J.Thomson Ltd is registered
The registered office is in Ipswich (IP1), in the Ipswich local authority area, East of England. Show IP1 3BX on a map.
Other trade companies in IP1
- Youngs Cabling LtdInstallers
- Tendring Home Solutions LtdFinishing trades
- Ebiavi Painting and Decorating LtdPainters and decorators
- Pro Build Care LtdFinishing trades
- One Stop Construction LtdBuilders
- Ra & MJ Fellgett LtdMachinery repair and installation
- Ortan Ems (Engineering & Marine Services) LtdMachinery repair and installation
- Affordable Road Planings LimitedCivil engineering
Also registered at this address
5 other companies use the same registered office as A.J.Thomson Ltd.
- K.P.S Plumbing and Heating Contracts LimitedPlumbers and heating engineers
- Like Electrical LtdElectricians
- Lummis Developments LimitedBuilders
- MPX Global LtdElectricians
- Simply Climate Control LimitedMachinery repair and installation
What happens if A.J.Thomson 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
- 05737092
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 9 March 2006 (20 years ago)
- Registered office
- C/O RSZ Accountancy Archdeacon House, Northgate Street, Ipswich, Suffolk, IP1 3BX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Floor and wall covering (SIC 43330) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 6 March 2026
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 Ipswich
Other active plumbing and heating companies registered in Ipswich.
- A.S.K Heating Services Ltd2017
- Aes National Limited2011
- Aldous Mechanical Ltd2023
- Alton Plumbing Ltd2006
- Andrew James Elite Services Ltd2023
- Aquasmart Solutions Ltd2024
- Avid Mechanical Services Ltd2007
- Az Plumbing Services Limited2020
All plumbing and heating companies in Ipswich · All trades in Ipswich · Plumbers and heating engineers across the UK
Frequently asked questions
When are A.J.Thomson Ltd's accounts due?
A.J.Thomson 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.J.Thomson 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 A.J.Thomson Ltd still trading?
A.J.Thomson 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.J.Thomson Ltd do?
A.J.Thomson Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Floor and wall covering (SIC 43330).
How old is A.J.Thomson Ltd?
A.J.Thomson Ltd was incorporated on 9 March 2006, 20 years ago.
What is the penalty if A.J.Thomson 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.J.Thomson 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.