- Companies
- Plumbers and heating engineers
- Northampton
- P A Cassidy (Mechanical Services) Limited
P A Cassidy (Mechanical Services) Limited
- Company number
- 03580480
- Incorporated
- 12 Jun 199828 years trading
- Registered office
- 21 Ross Road, Weedon Road, Northampton, NN5 5AX
- Nature of business
- Plumbing, heat and air-conditioning installation; Other specialised construction activities n.e.c.
P A Cassidy (Mechanical Services) Limited is a 28-year-old private limited company registered in Northampton, company number 03580480, one of 197 plumbing and heating companies in Northampton. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 (+19.1%) on the year before, to £85K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £116K against £96K owed within a year: 1.2 times cover.
- 5 employees on average during the year.
- 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £85K | £50K | £116K | £96K | 5 |
| 30 Jun 2024 | £71K | £102K | £124K | £94K | 5 |
| 30 Jun 2023 | £85K | £92K | £109K | £64K | 5 |
| 30 Jun 2022 | £112K | £64K | £156K | £66K | 5 |
| 30 Jun 2021 | £148K | £89K | £194K | £66K | 5 |
| 30 Jun 2020 | £59K | £9,397 | £97K | £85K | 5 |
| 30 Jun 2019 | £65K | £7,630 | £89K | £76K | 5 |
| 30 Jun 2018 | £62K | £1,525 | £92K | £86K | 4 |
| 30 Jun 2017 | £73K | £55K | £92K | £80K | 4 |
Where P A Cassidy (Mechanical Services) Limited is registered
The registered office is in Northampton (NN5), in the West Northamptonshire local authority area, East Midlands. Show NN5 5AX on a map.
Other trade companies in NN5
- RNR Autos LtdMotor traders
- County Cooling & Electrical LtdPlumbers and heating engineers
- Ceramilux Construct LimitedBuilders
- Aetoj LtdMachinery repair and installation
- Base2Build LtdBuilders
- Osadrew Services LtdCleaning companies
- SK Corex LtdProperty developers
- Avv Carpentry LimitedJoiners and carpenters
What happens if P A Cassidy (Mechanical Services) 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 03580480
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 June 1998 (28 years ago)
- Registered office
- 21 Ross Road, Weedon Road, Northampton, NN5 5AX
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other specialised construction activities n.e.c. (SIC 43999) - Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 29 June 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 Northampton
Other active plumbing and heating companies registered in Northampton.
- Parsons Plumbing & Heating Services Ltd2025
- Percy's Plumbing & Heating Limited2015
- Phase Mechanical Projects Limited2011
- Phase Mechanical Services Limited2009
- Pi Building Services Ltd2008
- Plumb-Line Contracting Limited2001
- Plumbing MCM Ltd2024
- Plumbing DV Ltd2024
All plumbing and heating companies in Northampton · All trades in Northampton · Plumbers and heating engineers across the UK
Frequently asked questions
When are P A Cassidy (Mechanical Services) Limited's accounts due?
P A Cassidy (Mechanical Services) Limited's next accounts are due at Companies House by 31 March 2027 (in 169 days), covering the period to 30 June 2026.
When is P A Cassidy (Mechanical Services) Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is P A Cassidy (Mechanical Services) Limited still trading?
P A Cassidy (Mechanical Services) 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 A Cassidy (Mechanical Services) Limited do?
P A Cassidy (Mechanical Services) Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other specialised construction activities n.e.c. (SIC 43999).
How old is P A Cassidy (Mechanical Services) Limited?
P A Cassidy (Mechanical Services) Limited was incorporated on 12 June 1998, 28 years ago.
What is the penalty if P A Cassidy (Mechanical Services) 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 A Cassidy (Mechanical Services) 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.