- Companies
- Plumbers and heating engineers
- Northallerton
- Harry Clarke and Sons Limited
Harry Clarke and Sons Limited
- Company number
- 06747297
- Incorporated
- 12 Nov 200817 years trading
- Registered office
- Unit 2 Moxon Court, Thurston Road, Northallerton, DL6 2NG
- Nature of business
- Plumbing, heat and air-conditioning installation
Harry Clarke and Sons Limited is a 17-year-old private limited company registered in Northallerton, company number 06747297, one of 15 plumbing and heating companies in Northallerton. 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 £47K (+26.3%) on the year before, to £227K.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £526K against £244K owed within a year: 2.2 times cover.
- 12 employees on average, up from 11 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 | £227K | £45K | £526K | £244K | 12 |
| 30 Sep 2024 | £180K | £67K | £527K | £236K | 11 |
| 30 Sep 2023 | £178K | £93K | £457K | £160K | 10 |
| 31 Mar 2022 | £150K | £157K | £319K | £147K | 9 |
| 31 Mar 2021 | £131K | £177K | £348K | £195K | 9 |
| 31 Mar 2020 | £123K | £101K | £260K | £168K | 8 |
| 31 Mar 2019 | £97K | £83K | £216K | £158K | 6 |
| 31 Mar 2018 | £59K | £13K | £139K | £119K | 6 |
| 31 Mar 2017 | £23K | £27K | £100K | £112K | 9 |
| 31 Mar 2016 | £10 | £0 | £10 | £0 |
Where Harry Clarke and Sons Limited is registered
The registered office is in Northallerton (DL6), in the North Yorkshire local authority area, Yorkshire and The Humber. Show DL6 2NG on a map.
Other trade companies in DL6
- Matthew Baker Plumbing Heating & Bathrooms LtdPlumbers and heating engineers
- Dales Property Projects LtdProperty developers
- Lambourne Machinery Solutions LtdMachinery repair and installation
- Alan Badger LtdPlumbers and heating engineers
- MW Contracting Yorkshire LtdMechanics and garages
- North Bloom LtdLandscapers and gardeners
- Dobson Auto Repairs LtdMechanics and garages
- Brompton MOT Centre LtdMechanics and garages
Also registered at this address
1 other company uses the same registered office as Harry Clarke and Sons Limited.
- H Clarke & Sons LimitedPlumbers and heating engineers
What happens if Harry Clarke and Sons 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
- 06747297
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 November 2008 (17 years ago)
- Registered office
- Unit 2 Moxon Court, Thurston Road, Northallerton, DL6 2NG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 16 July 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 Northallerton
Other active plumbing and heating companies registered in Northallerton.
- HT Energy Limited1999
- JHK Biomass Services Ltd2022
- Lightfoot Plumbing & Heating Limited2010
- Living Fire Centre Ltd2022
- M Preston Plumbing & Heating Limited2022
- Matthew Baker Plumbing Heating & Bathrooms Ltd2026
- PJM (Yorkshire) Limited2022
- Plumbcraft (Yorks) Ltd2017
All plumbing and heating companies in Northallerton · All trades in Northallerton · Plumbers and heating engineers across the UK
Frequently asked questions
When are Harry Clarke and Sons Limited's accounts due?
Harry Clarke and Sons 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 Harry Clarke and Sons 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 Harry Clarke and Sons Limited still trading?
Harry Clarke and Sons 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 Harry Clarke and Sons Limited do?
Harry Clarke and Sons Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Harry Clarke and Sons Limited?
Harry Clarke and Sons Limited was incorporated on 12 November 2008, 17 years ago.
What is the penalty if Harry Clarke and Sons 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 Harry Clarke and Sons 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.