- Companies
- Plumbers and heating engineers
- Camborne
- Mark Harris Plumbing and Heating Limited
Mark Harris Plumbing and Heating Limited
- Company number
- 08332504
- Incorporated
- 17 Dec 201213 years trading
- Registered office
- Suite 8, Weeth Lane, Camborne, Cornwall, TR14 7DB
- Nature of business
- Plumbing, heat and air-conditioning installation
Mark Harris Plumbing and Heating Limited is a 13-year-old private limited company registered in Camborne, company number 08332504, one of 10 plumbing and heating companies in Camborne. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £3,177 (-21.3%) on the year before, to £12K.
- Current assets of £19K against £12K owed within a year: 1.6 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 2 years, 2024 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £12K | £9,961 | £19K | £12K | 2 |
| 29 Feb 2024 | £15K | £22K | £23K | £15K | 2 |
Where Mark Harris Plumbing and Heating Limited is registered
The registered office is in Camborne (TR14), in the Cornwall local authority area, South West. Show TR14 7DB on a map.
Other trade companies in TR14
- Cornwall Sewage & Groundworks LtdGroundworks and demolition
- D Bartle Construction LtdBuilders
- Re-Dec SW LtdPainters and decorators
- Ibex Heating LtdPlumbers and heating engineers
- Iem Supplies LtdMotor traders
- Medall Morgan Ventilation Services LtdCleaning companies
- Ba Property SW LtdProperty developers
- Chy Cleaning Company LtdCleaning companies
Also registered at this address
15 other companies use the same registered office as Mark Harris Plumbing and Heating Limited.
- All-Aspex Decorating Management Services LimitedPainters and decorators
- C.A.R Services Redruth LtdMechanics and garages
- Cove Carpentry and Interiors LtdJoiners and carpenters
- Fine Homes Cornwall LtdProperty developers
- Fine Homes Developments LtdBuilders
- G.B. Homes (SW) LimitedProperty developers
- Irisco LtdSpecialist contractors
- Just Stonework LtdFinishing trades
- Kernow Concierge Services LimitedCleaning companies
- Lockley Contracting LtdBuilders
- Oakvale Developments (SW) LtdSpecialist contractors
- RNC Developments LimitedBuilders
- Specialist Business Developments LtdProperty developers
- SS Carpentry & Construction LtdJoiners and carpenters
- Trees and Bees Cornwall LtdLandscapers and gardeners
What happens if Mark Harris Plumbing and Heating 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 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
- 08332504
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 December 2012 (13 years ago)
- Registered office
- Suite 8, Weeth Lane, Camborne, Cornwall, TR14 7DB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 15 December 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 Camborne
Other active plumbing and heating companies registered in Camborne.
- P J D Martin Limited1998
- Plumbing South West Ltd2022
- The Cornish Heating Company Ltd2021
- Thomas Mechanical Electrical Ltd2014
- C.O. Plumbing and Heating Limited2014
- Colin Wilton Heating & Plumbing Ltd2006
- Glow-Warm Heating Services Limited1996
- Heat Pump Pro Ltd2023
All plumbing and heating companies in Camborne · All trades in Camborne · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mark Harris Plumbing and Heating Limited's accounts due?
Mark Harris Plumbing and Heating Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Mark Harris Plumbing and Heating Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Mark Harris Plumbing and Heating Limited still trading?
Mark Harris Plumbing and Heating 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 Mark Harris Plumbing and Heating Limited do?
Mark Harris Plumbing and Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mark Harris Plumbing and Heating Limited?
Mark Harris Plumbing and Heating Limited was incorporated on 17 December 2012, 13 years ago.
What is the penalty if Mark Harris Plumbing and Heating 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 Mark Harris Plumbing and Heating 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.