- Companies
- Plumbers and heating engineers
- Kilmarnock
- Calvin Marshall Heating and Plumbing Services Ltd
Calvin Marshall Heating and Plumbing Services Ltd
- Company number
- SC690909
- Incorporated
- 2 Mar 20215 years trading
- Registered office
- 1A Bank Place, Kilmarnock, KA1 1HJ
- Nature of business
- Plumbing, heat and air-conditioning installation
Calvin Marshall Heating and Plumbing Services Ltd is a 5-year-old private limited company registered in Kilmarnock, company number SC690909, one of 45 plumbing and heating companies in Kilmarnock. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 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 £3,109 (+370.6%) on the year before, to £3,948.
- Net assets rose in 2 of 3 year-on-year comparisons on record.
- Current assets of £206 against £3,192 owed within a year: 0.1 times cover.
- 1 employee on average, up from -1 the year before.
- Balance sheets on record for 4 years, 2022 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £3,948 | £206 | £3,192 | 1 | |
| 30 Apr 2024 | £839 | £1,467 | £5,005 | -1 | |
| 30 Apr 2023 | £3,338 | £2,232 | £3,833 | -1 | |
| 31 Mar 2022 | £1,382 | £533 | £5,182 | -1 |
Where Calvin Marshall Heating and Plumbing Services Ltd is registered
The registered office is in Kilmarnock (KA1), in the East Ayrshire local authority area, Scotland. Show KA1 1HJ on a map.
Other trade companies in KA1
- MM Electrical Instalations LtdElectricians
- Cornerstone Project Management LtdBuilders
- JCC.Vertex Build LtdElectricians
- Deo Property Consortium LimitedProperty developers
- Jake Robb Joinery LimitedJoiners and carpenters
- Cby Plumbing & Heating Solutions LtdPlumbers and heating engineers
- Elite Installs Scotland LtdPlumbers and heating engineers
- Elevate Joinery & Conservatory Specialist Ayrshire LimitedJoiners and carpenters
Also registered at this address
23 other companies use the same registered office as Calvin Marshall Heating and Plumbing Services Ltd.
- Am Rail Contracts LtdCivil engineering
- Ayrshire Drywall Services LtdPlasterers
- Boab's Your Builder LimitedLandscapers and gardeners
- Car-Bella Scotland LimitedElectricians
- Complex Access LtdInstallers
- Cooper Decorators LimitedPainters and decorators
- G B Resources LimitedCivil engineering
- Gaztec Roofing Services LtdRoofers
- Gaztec Services LtdPlumbers and heating engineers
- Glenabby Roofing LimitedRoofers
- GSC Building and Landscaping Services LtdLandscapers and gardeners
- Im Joinery LimitedJoiners and carpenters
- J Banks Rail Services LtdCivil engineering
- J.N.S. Contracts LimitedLandscapers and gardeners
- JPH Joinery Services LtdJoiners and carpenters
- Kelly Grab Hire Kilmarnock LtdSpecialist contractors
- KJK Rail LimitedCivil engineering
- KPS Bricklayers LtdProperty developers
- Neil Plumbing & Heating LtdPlumbers and heating engineers
- Thistle Shutters LtdJoiners and carpenters
- Ultimate Restoration LtdCleaning companies
- Walkers 101 Services LtdCivil engineering
- WCK Windows & Doors (Ayrshire) LtdJoiners and carpenters
What happens if Calvin Marshall Heating and 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 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- SC690909
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 March 2021 (5 years ago)
- Registered office
- 1A Bank Place, Kilmarnock, KA1 1HJ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 30 January 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 Kilmarnock
Other active plumbing and heating companies registered in Kilmarnock.
- Cameron Technical Services Ltd2019
- Cby Plumbing & Heating Solutions Ltd2026
- CCS (Complete Caravan Solutions) Limited2025
- CDC Engineering Ltd2025
- Coorie Renovations Ltd2019
- D Millar Plumbing, Heating & Gas Limited2021
- Dma Gas and Oil Ltd2019
- DMJ Heating & Gas Services Limited2021
All plumbing and heating companies in Kilmarnock · All trades in Kilmarnock · Plumbers and heating engineers across the UK
Frequently asked questions
When are Calvin Marshall Heating and Plumbing Services Ltd's accounts due?
Calvin Marshall Heating and Plumbing Services Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Calvin Marshall Heating and Plumbing Services Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Calvin Marshall Heating and Plumbing Services Ltd still trading?
Calvin Marshall Heating and 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 Calvin Marshall Heating and Plumbing Services Ltd do?
Calvin Marshall Heating and Plumbing Services Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Calvin Marshall Heating and Plumbing Services Ltd?
Calvin Marshall Heating and Plumbing Services Ltd was incorporated on 2 March 2021, 5 years ago.
What is the penalty if Calvin Marshall Heating and 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 Calvin Marshall Heating and 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.