- Companies
- Plumbers and heating engineers
- March
- Hart Engineering Limited
Hart Engineering Limited
- Company number
- 03768706
- Incorporated
- 12 May 199927 years trading
- Registered office
- 1 Stags Holt Farm Cottages, Coldham Bank, March, PE15 0BS
- Nature of business
- Plumbing, heat and air-conditioning installation
Hart Engineering Limited is a 27-year-old private limited company registered in March, company number 03768706, one of 23 plumbing and heating companies in March. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 down £7,972 (-5.6%) on the year before, to £134K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £21K against £112K owed within a year: 0.2 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 May 2025 | £134K | £21K | £112K | 1 | |
| 31 May 2024 | £142K | £68K | £152K | 1 | |
| 31 May 2023 | £133K | £121K | £213K | 1 | |
| 31 May 2022 | £128K | £129K | £227K | 1 | |
| 31 May 2021 | £129K | £145K | £243K | 1 | |
| 31 May 2020 | £68K | £17K | £324K | 1 | |
| 31 May 2019 | £63K | £23K | £335K | ||
| 31 May 2018 | £78K | £11K | £310K | ||
| 31 May 2017 | £78K | £8,094 | £85K | ||
| 31 May 2016 | £81K | £23K | £26K | £101K |
Where Hart Engineering Limited is registered
The registered office is in March (PE15), in the Fenland local authority area, East of England. Show PE15 0BS on a map.
Other trade companies in PE15
- Ace Resin Surfacing LimitedFloor and wall tilers
- Impway Connections LimitedCivil engineering
- Zee Plus Services LtdFinishing trades
- Coreshine LtdCleaning companies
- J Kirby Utilities LtdCivil engineering
- M B Concierge LtdMotor traders
- WS Civil Consultant LtdCivil engineering
- Ga Motors LimitedMotor traders
What happens if Hart Engineering 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 03768706
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 May 1999 (27 years ago)
- Registered office
- 1 Stags Holt Farm Cottages, Coldham Bank, March, PE15 0BS
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 12 May 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
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 March
Other active plumbing and heating companies registered in March.
- KTG Plumbing and Heating Limited2022
- LH Plumbing Ltd2021
- Lombardo Plumbing & Heating Limited2010
- MBF Bathrooms Ltd2026
- Merchford Plumbing and Heating Limited2009
- Mill Cottage Plumbing & Heating Ltd2019
- MP Gas Certificate & Servicing Limited2021
- MP Plumbing & Heating Limited2018
All plumbing and heating companies in March · All trades in March · Plumbers and heating engineers across the UK
Frequently asked questions
When are Hart Engineering Limited's accounts due?
Hart Engineering Limited's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Hart Engineering Limited's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Hart Engineering Limited still trading?
Hart Engineering 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 Hart Engineering Limited do?
Hart Engineering Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Hart Engineering Limited?
Hart Engineering Limited was incorporated on 12 May 1999, 27 years ago.
What is the penalty if Hart Engineering 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 Hart Engineering 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.