- Companies
- Installers
- King's Lynn
- Mammoth Energy Solutions Limited
Mammoth Energy Solutions Limited
- Company number
- 16306292
- Incorporated
- 11 Mar 20251 year trading
- Registered office
- 48 King Street, King's Lynn, PE30 1HE
- Nature of business
- Other construction installation
Mammoth Energy Solutions Limited is a 1-year-old private limited company registered in King's Lynn, company number 16306292, one of 31 installation companies (insulation, lifts, shutters and similar) in King's Lynn. Its next accounts are due at Companies House on 11 December 2026, and its first CT600 is due at HMRC on 10 March 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Mammoth Energy Solutions Limited is registered
The registered office is in King's Lynn (PE30), in the King's Lynn and West Norfolk local authority area, East of England. Show PE30 1HE on a map.
Other trade companies in PE30
- Fishers Building Services LtdBuilders
- Meadowfields Holdings LimitedBuilders
- Gotsell Plastering & Property LimitedPlasterers
- Meadowvale Holdings LimitedBuilders
- K D Motor Traders LtdMotor traders
- Squeegeeright LimitedCleaning companies
- LS Building Developments LimitedBuilders
- JC Labour LtdInstallers
Shared registered office
54 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 Mammoth Energy Solutions 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 11 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Dec 2026 to 11 Jan 2027 | £150 |
| 1 to 3 months late | 12 Jan 2027 to 11 Mar 2027 | £375 |
| 3 to 6 months late | 12 Mar 2027 to 11 Jun 2027 | £750 |
| More than 6 months late | From 12 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 16306292
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 March 2025 (1 year ago)
- Registered office
- 48 King Street, King's Lynn, PE30 1HE
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 10 March 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in King's Lynn
Other active installation companies (insulation, lifts, shutters and similar) registered in King's Lynn.
- Mode Traders Limited2025
- National Roofing Services Ltd2025
- Nikrom Ltd2024
- Olive Construction (Norfolk) Ltd2022
- Padel Dynamic Limited2025
- PBR Construction (Norfolk) Ltd2024
- PCS Building Ltd2017
- Todd's Home Improvement Ltd2022
All installation companies (insulation, lifts, shutters and similar) in King's Lynn · All trades in King's Lynn · Installers across the UK
Frequently asked questions
When are Mammoth Energy Solutions Limited's accounts due?
Mammoth Energy Solutions Limited's next accounts are due at Companies House by 11 December 2026 (in 59 days), covering the period to 31 March 2026.
When is Mammoth Energy Solutions Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 10 March 2026, due by 10 March 2027, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mammoth Energy Solutions Limited still trading?
Mammoth Energy Solutions 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 Mammoth Energy Solutions Limited do?
Mammoth Energy Solutions Limited is registered under Other construction installation (SIC 43290).
How old is Mammoth Energy Solutions Limited?
Mammoth Energy Solutions Limited was incorporated on 11 March 2025, 1 year ago.
What is the penalty if Mammoth Energy Solutions 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 Mammoth Energy Solutions 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.