- Companies
- Installers
- South Shields
- Mills Efficient Energy Group Limited
Mills Efficient Energy Group Limited
- Company number
- 16716366
- Incorporated
- 15 Sep 20251 year trading
- Registered office
- 15 Albany Street West, South Shields, NE33 4BE
- Nature of business
- Other construction installation
Mills Efficient Energy Group Limited is a 1-year-old private limited company registered in South Shields, company number 16716366, one of 17 installation companies (insulation, lifts, shutters and similar) in South Shields. Its next accounts are due at Companies House on 15 June 2027, and its first CT600 is due at HMRC on 14 September 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 Mills Efficient Energy Group Limited is registered
The registered office is in South Shields (NE33), in the South Tyneside local authority area, North East. Show NE33 4BE on a map.
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What happens if Mills Efficient Energy Group 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 15 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Jun 2027 to 15 Jul 2027 | £150 |
| 1 to 3 months late | 16 Jul 2027 to 15 Sep 2027 | £375 |
| 3 to 6 months late | 16 Sep 2027 to 15 Dec 2027 | £750 |
| More than 6 months late | From 16 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16716366
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 September 2025 (1 year ago)
- Registered office
- 15 Albany Street West, South Shields, NE33 4BE
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
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 South Shields
Other active installation companies (insulation, lifts, shutters and similar) registered in South Shields.
- South Tyneside Construction Ltd2022
- Stanza Ne Ltd2024
- Stepform Limited2008
- W C R Engineering Ltd2026
- Aspect Bathrooms and Heating Ltd2019
- Dave Ryla Rigging Ltd2026
- Great Britannia Bathrooms Ltd2025
- Heartland Loft Conversions Ltd2026
All installation companies (insulation, lifts, shutters and similar) in South Shields · All trades in South Shields · Installers across the UK
Frequently asked questions
When are Mills Efficient Energy Group Limited's accounts due?
Mills Efficient Energy Group Limited's next accounts are due at Companies House by 15 June 2027 (in 245 days), covering the period to 30 September 2026.
When is Mills Efficient Energy Group 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 14 September 2026, due by 14 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mills Efficient Energy Group Limited still trading?
Mills Efficient Energy Group Limited is listed as active on the Companies House register (checked 13 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 Mills Efficient Energy Group Limited do?
Mills Efficient Energy Group Limited is registered under Other construction installation (SIC 43290).
How old is Mills Efficient Energy Group Limited?
Mills Efficient Energy Group Limited was incorporated on 15 September 2025, 1 year ago.
What is the penalty if Mills Efficient Energy Group 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 Mills Efficient Energy Group Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.