- Companies
- Plumbers and heating engineers
- Newtownards
- Killinchy Plumbing & Heating Ltd
Killinchy Plumbing & Heating Ltd
- Company number
- NI737340
- Incorporated
- 28 Jan 2026
- Registered office
- 5 the Beeches, Killinchy, Newtownards, BT23 6WA
- Nature of business
- Plumbing, heat and air-conditioning installation
Killinchy Plumbing & Heating Ltd is a newly incorporated private limited company registered in Newtownards, company number NI737340, one of 21 plumbing and heating companies in Newtownards. Its next accounts are due at Companies House on 28 October 2027, and its first CT600 is due at HMRC on 27 January 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Killinchy Plumbing & Heating Ltd is registered
The registered office is in Newtownards (BT23), in the Ards and North Down local authority area, Northern Ireland. Show BT23 6WA on a map.
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What happens if Killinchy Plumbing & Heating 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 28 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 29 Oct 2027 to 28 Nov 2027 | £150 |
| 1 to 3 months late | 29 Nov 2027 to 28 Jan 2028 | £375 |
| 3 to 6 months late | 29 Jan 2028 to 28 Apr 2028 | £750 |
| More than 6 months late | From 29 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- NI737340
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 28 January 2026
- Registered office
- 5 the Beeches, Killinchy, Newtownards, BT23 6WA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
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 Newtownards
Other active plumbing and heating companies registered in Newtownards.
- Matthew McDowell Heating & Plumbing Ltd2017
- Orcas Systems Ltd1997
- P J Hughes Plumbing & Heating Ltd2005
- Patrick Hughes Limited2016
- PW Boilers Ltd2018
- Quiki-Leaks Limited2026
- Signature Plumbing Solutions Ltd2021
- Signature Plumbing Specialists Limited2025
All plumbing and heating companies in Newtownards · All trades in Newtownards · Plumbers and heating engineers across the UK
Frequently asked questions
When are Killinchy Plumbing & Heating Ltd's accounts due?
Killinchy Plumbing & Heating Ltd's next accounts are due at Companies House by 28 October 2027 (in 380 days), covering the period to 31 January 2027.
When is Killinchy Plumbing & Heating 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 27 January 2027, due by 27 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Killinchy Plumbing & Heating Ltd still trading?
Killinchy Plumbing & Heating 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 Killinchy Plumbing & Heating Ltd do?
Killinchy Plumbing & Heating Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Killinchy Plumbing & Heating Ltd?
Killinchy Plumbing & Heating Ltd was incorporated on 28 January 2026, less than a year ago.
What is the penalty if Killinchy Plumbing & Heating 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 Killinchy Plumbing & Heating 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.