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- Greenmage Limited
Company profile · Plumbers and heating engineers
Greenmage Limited
Greenmage Limited is a 2-year-old private limited company registered in Reading, company number 15490850, one of 221 plumbing and heating companies in Reading. 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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Where Greenmage Limited is registered
The registered office is in Reading (RG30), in the Reading local authority area, South East. Show RG30 1EG on a map.
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Also registered at this address
1 other company uses the same registered office as Greenmage Limited.
- James Murphy Electrical LimitedElectricians
What happens if Greenmage 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
- 15490850
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 February 2024 (2 years ago)
- Registered office
- Taxassist Accountants, 530 Oxford Road, Reading, Berkshire, RG30 1EG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 25 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 Reading
Other active plumbing and heating companies registered in Reading.
- Grenco Energy Ltd2025
- Griggs Plumbing & Heating Ltd2025
- GS Landry & Son Ltd2003
- Guest's Building Services Ltd2017
- H & Ce Ltd2026
- H.H Homes and Built Ltd2026
- Harvey Heating and Cooling Ltd2025
- Heat Pump Zone Ltd2022
All plumbing and heating companies in Reading · All trades in Reading · Plumbers and heating engineers across the UK
Frequently asked questions
When are Greenmage Limited's accounts due?
Greenmage Limited's next accounts are due at Companies House by 30 November 2026 (in 49 days), covering the period to 28 February 2026.
When is Greenmage 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 Greenmage Limited still trading?
Greenmage 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 Greenmage Limited do?
Greenmage Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Greenmage Limited?
Greenmage Limited was incorporated on 14 February 2024, 2 years ago.
What is the penalty if Greenmage 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 Greenmage 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.