- Companies
- Specialist contractors
- London
- Energy Optimisation Solutions Limited
Energy Optimisation Solutions Limited
- Company number
- 10285951
- Incorporated
- 19 Jul 201610 years trading
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Other specialised construction activities n.e.c.
Energy Optimisation Solutions Limited is a 10-year-old private limited company registered in London, company number 10285951, one of 4,318 specialist construction companies in London. Its next accounts are due at Companies House on 30 April 2027, and the CT600 for the period to 31 July 2026 is due at HMRC on 31 July 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 £786K (-29.6%) on the year before, to -£3.4M.
- Net assets rose in 1 of 8 year-on-year comparisons on record.
- Current assets of £77K against £3.5M owed within a year: 0.0 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2025 | -£3.4M | £77K | £3.5M | 0 | |
| 31 Jul 2024 | -£2.7M | £324K | £3M | 2 | |
| 31 Jul 2023 | -£2.1M | £222K | £2.4M | 2 | |
| 31 Jul 2022 | -£1.5M | £159K | £1.7M | 2 | |
| 31 Jul 2021 | -£950K | £21K | £234K | 2 | |
| 31 Jul 2020 | -£750K | £5,573 | £53K | 2 | |
| 31 Jul 2019 | £21K | £21K | £412 | ||
| 31 Jul 2018 | £76K | £91K | £16K | ||
| 31 Jul 2017 | £42K | £71K | £71K | £29K |
Where Energy Optimisation Solutions Limited is registered
The registered office is in London (EC1V), in the Islington local authority area, London. Show EC1V 2NX on a map.
Other trade companies in EC1V
- Cardiff Electrical Solutions LtdElectricians
- Edemis Construction LtdBuilders
- Zaylan LtdProperty developers
- Pronto Roofing and Construction LtdRoofers
- Instal Systems LtdPlumbers and heating engineers
- J&R Partners LtdBuilders
- The Tile Craft LtdFinishing trades
- Cathal Od Solutions LtdSpecialist contractors
Shared registered office
2,436 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 Energy Optimisation 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 10285951
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 July 2016 (10 years ago)
- Registered office
- 128 City Road, London, EC1V 2NX
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 July 2025
- Last confirmation statement
- 13 June 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in London
Other active specialist construction companies registered in London.
- Energy-Tech (London) Ltd2014
- Enfield Interiors Ltd2013
- Engcon Plant Hire Ltd2022
- Engel Developments Ltd2021
- Engineering Projects TM Ltd2025
- Engineering Risk Specialists Limited2012
- Eno Solutions Limited2025
- Enrico Froget Services Ltd2022
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Frequently asked questions
When are Energy Optimisation Solutions Limited's accounts due?
Energy Optimisation Solutions Limited's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Energy Optimisation Solutions Limited's CT600 due?
The CT600 for the period to 31 July 2026 is due at HMRC by 31 July 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2027.
Is Energy Optimisation Solutions Limited still trading?
Energy Optimisation 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 Energy Optimisation Solutions Limited do?
Energy Optimisation Solutions Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Energy Optimisation Solutions Limited?
Energy Optimisation Solutions Limited was incorporated on 19 July 2016, 10 years ago.
What is the penalty if Energy Optimisation 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 Energy Optimisation 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.