- Companies
- Plumbers and heating engineers
- Slough
- Eco Horizon Ltd
Eco Horizon Ltd
- Company number
- 12742515
- Incorporated
- 14 Jul 20206 years trading
- Registered office
- Chiltern House 64 High Street, Burnham, Slough, SL1 7JT
- Nature of business
- Plumbing, heat and air-conditioning installation; Other letting and operating of own or leased real estate; Environmental consulting activities; Other business support service activities n.e.c.
Eco Horizon Ltd is a 6-year-old private limited company registered in Slough, company number 12742515, one of 128 plumbing and heating companies in Slough. 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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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 up £14K (+374.8%) on the year before, to £10K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £22K against £13K owed within a year: 1.7 times cover.
- 5 employees on average, up from 4 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £10K | £22K | £13K | 5 | |
| 30 Jun 2024 | -£3,665 | £1,873 | £7,003 | 4 | |
| 30 Jun 2023 | £6,991 | £50K | £45K | 2 | |
| 31 Jul 2022 | £1,031 | £1,284 | £253 | 1 | |
| 31 Jul 2021 | -£334 | £3,901 | 1 |
Where Eco Horizon Ltd is registered
The registered office is in Slough (SL1), in the Buckinghamshire local authority area, South East. Show SL1 7JT on a map.
Other trade companies in SL1
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- Shadeworks LtdInstallers
- Yad Building Services LimitedBuilders
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- Imperial Berkshire Motors LtdMotor traders
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What happens if Eco Horizon 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 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
- 12742515
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2020 (6 years ago)
- Registered office
- Chiltern House 64 High Street, Burnham, Slough, SL1 7JT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other letting and operating of own or leased real estate (SIC 68209)
Environmental consulting activities (SIC 74901)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 19 January 2026
- Previous names
- Horizon Energy Assessor & Property Services Ltd (until 6 Feb 2025)
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 Slough
Other active plumbing and heating companies registered in Slough.
- Eco Smart Homes Ltd2023
- Elec&Gas Solutions Ltd2011
- Energy West Ltd2023
- Envex Energy Solutions Ltd2025
- Ethos Controls Ltd2025
- Eton Air Conditioning Ltd2026
- Extreme Cribs Bathrooms Ltd2018
- Fix A Flame Ltd2026
All plumbing and heating companies in Slough · All trades in Slough · Plumbers and heating engineers across the UK
Frequently asked questions
When are Eco Horizon Ltd's accounts due?
Eco Horizon Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Eco Horizon Ltd'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 Eco Horizon Ltd still trading?
Eco Horizon 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 Eco Horizon Ltd do?
Eco Horizon Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other letting and operating of own or leased real estate (SIC 68209); Environmental consulting activities (SIC 74901); Other business support service activities n.e.c. (SIC 82990).
How old is Eco Horizon Ltd?
Eco Horizon Ltd was incorporated on 14 July 2020, 6 years ago.
What is the penalty if Eco Horizon 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 Eco Horizon 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.