C12 Ltd
- Company number
- 08475685
- Incorporated
- 5 Apr 201313 years trading
- Registered office
- Office 6, Marsh Mills, Luck Lane, Huddersfield, HD3 4AB
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation; Freight transport by road; Environmental consulting activities
C12 Ltd is a 13-year-old private limited company registered in Huddersfield, company number 08475685, one of 118 plumbing and heating companies in Huddersfield. 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 down £276K (-113.4%) on the year before, to -£33K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £413K against £452K owed within a year: 0.9 times cover.
- 1 employee on average, down from 5 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 Apr 2025 | -£33K | £413K | £452K | 1 | |
| 30 Apr 2024 | £244K | £182K | £321K | £85K | 5 |
| 30 Apr 2023 | £349K | £21K | £476K | £130K | 1 |
| 30 Apr 2022 | -£88K | £11K | £103K | 5 | |
| 30 Apr 2021 | £74K | £122K | £51K | 4 | |
| 30 Apr 2020 | £1,370 | £117K | £116K | 2 | |
| 30 Apr 2019 | -£1,896 | -£105K | £101K | ||
| 30 Apr 2018 | £2,623 | £44K | £44K | ||
| 30 Apr 2017 | -£1,268 | £17K | £22K | ||
| 30 Apr 2016 | £11K | £12K | £54K | £47K |
Where C12 Ltd is registered
The registered office is in Huddersfield (HD3), in the Kirklees local authority area, Yorkshire and The Humber. Show HD3 4AB on a map.
Other trade companies in HD3
- Curvair MVHR LtdBuilders
- New Development Solutions LtdProperty developers
- Mak Rider LimitedMotor traders
- Elant Property LtdProperty developers
- T Senior Contracting LtdCivil engineering
- Silver Oak Property Solutions LtdBuilders
- Img Facilities LtdFacilities management
- Ajb Building (Wy) LtdFinishing trades
What happens if C12 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
- 08475685
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 April 2013 (13 years ago)
- Registered office
- Office 6, Marsh Mills, Luck Lane, Huddersfield, HD3 4AB
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290)
Freight transport by road (SIC 49410)
Environmental consulting activities (SIC 74901) - Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 16 June 2026
- Previous names
- C12 Sales Limited (until 4 Sep 2014)
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 Huddersfield
Other active plumbing and heating companies registered in Huddersfield.
- Carbon Save Ltd2020
- Chris Garsed Heating Services Limited2005
- Clarke Plumbing and Heating Solutions Ltd2023
- Colley Gas Services Ltd2026
- Craig Holdsworth Gas Services Ltd2021
- Cromwell Heating Ltd2023
- Crowther & Shaw Mechanical Services Limited2025
- Dga Plumbing & Heating Limited2016
All plumbing and heating companies in Huddersfield · All trades in Huddersfield · Plumbers and heating engineers across the UK
Frequently asked questions
When are C12 Ltd's accounts due?
C12 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 C12 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 C12 Ltd still trading?
C12 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 C12 Ltd do?
C12 Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290); Freight transport by road (SIC 49410); Environmental consulting activities (SIC 74901).
How old is C12 Ltd?
C12 Ltd was incorporated on 5 April 2013, 13 years ago.
What is the penalty if C12 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 C12 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.