- Companies
- Machinery repair and installation
- Cardiff
- P.I.Underwood and Son,Limited
P.I.Underwood and Son,Limited
- Company number
- 00734840
- Incorporated
- 7 Sep 196264 years trading
- Registered office
- 18 Court Close, Whitchurch, Cardiff, CF14 1JR
- Nature of business
- Repair of electrical equipment
P.I.Underwood and Son,Limited is a 64-year-old private limited company registered in Cardiff, company number 00734840, one of 137 machinery repair and installation companies in Cardiff. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 up £14K (+11.5%) on the year before, to £132K.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £33K against £218K owed within a year: 0.2 times cover.
- 2 employees on average, down from 4 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £132K | £33K | £218K | 2 | |
| 30 Sep 2024 | £118K | £42K | £219K | 4 | |
| 30 Sep 2023 | £89K | £50K | £207K | 4 | |
| 30 Sep 2022 | £75K | £36K | £162K | 4 | |
| 30 Sep 2021 | £46K | £51K | £140K | 4 | |
| 30 Sep 2020 | £40K | £54K | £139K | 4 | |
| 30 Sep 2019 | £32K | £57K | £135K | 4 | |
| 30 Sep 2018 | £11K | £72K | £131K | ||
| 30 Sep 2017 | -£15K | £64K | £126K | ||
| 30 Sep 2016 | -£79K | £40K | £82K | £188K |
Who runs and owns P.I.Underwood and Son,Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| D*** U*** | Director | Jan 2002 |
| M*** U*** | Director | Jan 2002 |
| W*** U*** | Secretary | before Mar 1991 |
3 former officers
| Name | Role | Appointed | Left |
|---|---|---|---|
| K*** U*** | Director | Sep 2025 | |
| S*** U*** | Director | Jan 2002 | Jul 2008 |
| W*** U*** | Director | Sep 2025 |
People with significant control (2)
Where P.I.Underwood and Son,Limited is registered
The registered office is in Cardiff (CF14), in the Cardiff local authority area, Wales. Show CF14 1JR on a map.
Other trade companies in CF14
- Velren Group LtdProperty developers
- Premierroofcare LtdRoofers
- JLG Groundworks LtdCleaning companies
- Tidyvibz LtdCleaning companies
- Ayyappa MTD LtdBuilders
- KM Phoenix Pond, Garden & General Maintenance LtdLandscapers and gardeners
- Eco Green Property Service LtdFinishing trades
- S and J Accident Repairs LtdPainters and decorators
What happens if P.I.Underwood and Son,Limited 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 30 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 00734840
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 September 1962 (64 years ago)
- Registered office
- 18 Court Close, Whitchurch, Cardiff, CF14 1JR
- Nature of business
- Repair of electrical equipment (SIC 33140)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 31 March 2026
Filing notes for machinery repair and installation companies
Machinery repair and installation companies often carry parts stock and specialist tools, and many work on contracts that span the year end.
Similar companies in Cardiff
Other active machinery repair and installation companies registered in Cardiff.
- Parchment Plant Repairs Limited2021
- Pearce Precision Limited2014
- Plant Equipment Pe Limited2026
- Platinum Vehicle Services Cardiff Ltd2017
- Precision Engineering Site Services Ltd2025
- Professional Kitchen Engineers Limited2026
- PSG Audio Visual Ltd2011
- R D Rees Plant Services Ltd2021
All machinery repair and installation companies in Cardiff · All trades in Cardiff · Machinery repair and installation across the UK
Frequently asked questions
When are P.I.Underwood and Son,Limited's accounts due?
P.I.Underwood and Son,Limited's next accounts are due at Companies House by 30 June 2027 (in 260 days), covering the period to 30 September 2026.
When is P.I.Underwood and Son,Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is P.I.Underwood and Son,Limited still trading?
P.I.Underwood and Son,Limited 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 P.I.Underwood and Son,Limited do?
P.I.Underwood and Son,Limited is registered under Repair of electrical equipment (SIC 33140).
How old is P.I.Underwood and Son,Limited?
P.I.Underwood and Son,Limited was incorporated on 7 September 1962, 64 years ago.
Who runs P.I.Underwood and Son,Limited?
P.I.Underwood and Son,Limited has 2 active directors, the longest-serving appointed in Jan 2002. Their names and service addresses are on the Companies House register.
Who owns P.I.Underwood and Son,Limited?
2 people or companies have significant control of P.I.Underwood and Son,Limited: an individual (has significant influence or control); an individual (has significant influence or control).
What is the penalty if P.I.Underwood and Son,Limited 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 P.I.Underwood and Son,Limited 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.