- Companies
- Plumbers and heating engineers
- Belfast
- McDowell Plumbing Services Ltd
McDowell Plumbing Services Ltd
- Company number
- NI692473
- Incorporated
- 10 Nov 20223 years trading
- Registered office
- Unit A, Loughside Industrial Park, Dargan Crescent, Belfast, BT3 9JA
- Nature of business
- Plumbing, heat and air-conditioning installation
McDowell Plumbing Services Ltd is a 3-year-old private limited company registered in Belfast, company number NI692473, one of 99 plumbing and heating companies in Belfast. Its next accounts are due at Companies House on 30 November 2026, and its first CT600 is due at HMRC on 30 November 2026.
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 £171 (+171%) on the year before, to £271.
- Current assets of £61K against £61K owed within a year: 1.0 times cover.
- 3 employees on average, up from 0 the year before.
- Balance sheets on record for 2 years, 2023 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2024 | £271 | £61K | £61K | 3 | |
| 30 Nov 2023 | £100 | £100 | 0 |
Where McDowell Plumbing Services Ltd is registered
The registered office is in Belfast (BT3), in the Belfast local authority area, Northern Ireland. Show BT3 9JA on a map.
Other trade companies in BT3
- Lagan Ground Engineering LimitedSpecialist contractors
- Glenavy Site LtdProperty developers
- Rosemount Homes (101) LimitedProperty developers
- Rosemount Homes (102) LimitedProperty developers
- Lagan Specialist International LimitedCivil engineering
- Lagan Agl LimitedElectricians
- Clyde Furnishing Belfast LtdJoiners and carpenters
- H&J Martin Fit Out LimitedProperty developers
Also registered at this address
1 other company uses the same registered office as McDowell Plumbing Services Ltd.
What happens if McDowell Plumbing Services 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- NI692473
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 November 2022 (3 years ago)
- Registered office
- Unit A, Loughside Industrial Park, Dargan Crescent, Belfast, BT3 9JA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 November 2024
- Last confirmation statement
- 9 November 2025
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 Belfast
Other active plumbing and heating companies registered in Belfast.
- McKee and Bailie Ltd2025
- MG Gas N.I Ltd2026
- Northern Mechanical Ltd1978
- Plumbing Heating Gas Technical Services Ltd2024
- Pools & Leisure Ireland Ltd2021
- Priority Gas & Plumbing NI Ltd2026
- Pump & Garage Equipment Services Limited2011
- Quick Plumber Services Limited2026
All plumbing and heating companies in Belfast · All trades in Belfast · Plumbers and heating engineers across the UK
Frequently asked questions
When are McDowell Plumbing Services Ltd's accounts due?
McDowell Plumbing Services Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is McDowell Plumbing Services 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 30 November 2025, due by 30 November 2026, and one for the period to 28 February 2026, due by 28 February 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is McDowell Plumbing Services Ltd still trading?
McDowell Plumbing Services 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 McDowell Plumbing Services Ltd do?
McDowell Plumbing Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is McDowell Plumbing Services Ltd?
McDowell Plumbing Services Ltd was incorporated on 10 November 2022, 3 years ago.
What is the penalty if McDowell Plumbing Services 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 McDowell Plumbing Services 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.