- Companies
- Plumbers and heating engineers
- Lanark
- C Gilmore Plumbing and Heating Limited
C Gilmore Plumbing and Heating Limited
- Company number
- SC399648
- Incorporated
- 16 May 201115 years trading
- Registered office
- The Mechanics' Workshop, New Lanark Mills, Lanark, ML11 9DB
- Nature of business
- Plumbing, heat and air-conditioning installation
C Gilmore Plumbing and Heating Limited is a 15-year-old private limited company registered in Lanark, company number SC399648, one of 24 plumbing and heating companies in Lanark. 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 up £5,951 (+63.6%) on the year before, to £15K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £57K against £110K owed within a year: 0.5 times cover.
- 3 employees 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 | £15K | £19K | £57K | £110K | 3 |
| 31 May 2024 | £9,362 | £25K | £50K | £69K | 3 |
| 31 May 2023 | £3,273 | £38K | £68K | £76K | 2 |
| 31 May 2022 | £2,804 | £14K | £54K | £58K | 2 |
| 31 May 2021 | £2,959 | £28K | £56K | £60K | 2 |
| 31 May 2020 | £5,985 | £72K | £92K | £103K | 2 |
| 31 May 2019 | £2,061 | £5,860 | £24K | £38K | 3 |
| 31 May 2018 | £2,785 | £21K | £43K | £55K | 3 |
| 31 May 2017 | £14K | £38K | £60K | £59K | 2 |
| 31 May 2016 | £1,597 | £34K | £41K |
Where C Gilmore Plumbing and Heating Limited is registered
The registered office is in Lanark (ML11), in the South Lanarkshire local authority area, Scotland. Show ML11 9DB on a map.
Other trade companies in ML11
- Sterling Renewables Projects LimitedElectricians
- Ejp Kitchens & Bathrooms LtdJoiners and carpenters
- J Frood Double Glazing LtdGlaziers
- Duchray Holdings LimitedSpecialist contractors
- RM Offshore LtdInstallers
- Fletcher Groundworks LimitedInstallers
- Beechtreewright LtdBuilders
- Blackwood Electrical Services LtdElectricians
Shared registered office
29 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if C Gilmore 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 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
- SC399648
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 May 2011 (15 years ago)
- Registered office
- The Mechanics' Workshop, New Lanark Mills, Lanark, ML11 9DB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 13 May 2026
- Previous names
- C Gilmour Plumbing and Heating Ltd (until 20 May 2011)
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 Lanark
Other active plumbing and heating companies registered in Lanark.
- Clyde Air Conditioning Limited2003
- Clyde HVAC Ltd2025
- Clydesdale Plumbers Limited2014
- Craig Hawthorn Plumbing Ltd2016
- G N Tait Ltd2014
- GM Contractors (Scotland) Ltd2016
- Has Renewables Ltd2024
- HR Contractors (Scotland) Ltd2025
All plumbing and heating companies in Lanark · All trades in Lanark · Plumbers and heating engineers across the UK
Frequently asked questions
When are C Gilmore Plumbing and Heating Limited's accounts due?
C Gilmore Plumbing and Heating Limited's next accounts are due at Companies House by 28 February 2027 (in 137 days), covering the period to 31 May 2026.
When is C Gilmore Plumbing and Heating 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 C Gilmore Plumbing and Heating Limited still trading?
C Gilmore 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 C Gilmore Plumbing and Heating Limited do?
C Gilmore Plumbing and Heating Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is C Gilmore Plumbing and Heating Limited?
C Gilmore Plumbing and Heating Limited was incorporated on 16 May 2011, 15 years ago.
What is the penalty if C Gilmore 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 C Gilmore 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.