Onsen Energy Group Limited
- Company number
- 08146223
- Incorporated
- 17 Jul 201214 years trading
- Registered office
- Longfrey Cottage Longfrey Cottage, Dorking Road, Chilworth, Surrey, GU4 8RH
- Nature of business
- Construction of domestic buildings
Onsen Energy Group Limited is a 14-year-old private limited company registered in Chilworth, company number 08146223, one of the UK's building contractors. Its next accounts are due at Companies House on 20 January 2028, and the CT600 for the period to 20 April 2027 is due at HMRC on 20 April 2028.
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 £233K (-99.5%) on the year before, to £1,176.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £288 against £888 owed within a year: 0.3 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 20 Apr 2026 | £1,176 | £288 | £288 | £888 | 2 |
| 30 Jun 2025 | £234K | £19K | £514K | £12K | 2 |
| 30 Jun 2024 | £248K | £97K | £574K | £44K | 2 |
| 30 Jun 2023 | £258K | £88K | £570K | £317K | 2 |
| 30 Jun 2022 | £283K | £110K | £614K | £337K | 2 |
| 30 Jun 2021 | £265K | £205K | £632K | £390K | 2 |
| 30 Jun 2020 | £218K | £547K | £338K | 2 | |
| 30 Jun 2019 | £203K | £75K | £546K | £344K | 2 |
| 30 Jun 2018 | £205K | £498K | £510K | £310K | 2 |
| 30 Jun 2017 | £256K | £76K | £856K | £609K | 2 |
Where Onsen Energy Group Limited is registered
The registered office is in Chilworth (GU4), in the Guildford local authority area, South East. Show GU4 8RH on a map.
Other trade companies in GU4
- Carwash Clay Lane LtdCleaning companies
- Das Carpet Cleaning LimitedCleaning companies
- Cleanin Genie Services LtdCleaning companies
- Open Lane Motors LimitedMotor traders
- Lewis Daniels Services LimitedCleaning companies
- Pollard Properties (Surrey) LtdProperty developers
- Clandon Roofing Company LtdRoofers
- Precision Cooling Solutions LtdPlumbers and heating engineers
Also registered at this address
2 other companies use the same registered office as Onsen Energy Group Limited.
- Eco Flame Heating Solutions LtdPlumbers and heating engineers
- Onsen Energy LimitedSpecialist contractors
What happens if Onsen 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 20 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 21 Jan 2028 to 20 Feb 2028 | £150 |
| 1 to 3 months late | 21 Feb 2028 to 20 Apr 2028 | £375 |
| 3 to 6 months late | 21 Apr 2028 to 20 Jul 2028 | £750 |
| More than 6 months late | From 21 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 21 Apr 2028 | £200 |
| 3 months late | 20 Jul 2028 | another £200 |
| 6 months late | 20 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 20 Apr 2029 | 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
- 08146223
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 July 2012 (14 years ago)
- Registered office
- Longfrey Cottage Longfrey Cottage, Dorking Road, Chilworth, Surrey, GU4 8RH
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 20 April (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 20 April 2026
- Last confirmation statement
- 11 July 2026
- Charges (mortgages)
- 0 outstanding of 3 registered
- Previous names
- Birchland Homes Limited (until 6 Mar 2023)
White Willow Property Services Limited (until 9 Mar 2017)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies
Other active building contractors.
Frequently asked questions
When are Onsen Energy Group Limited's accounts due?
Onsen Energy Group Limited's next accounts are due at Companies House by 20 January 2028 (in 464 days), covering the period to 20 April 2027.
When is Onsen Energy Group Limited's CT600 due?
The CT600 for the period to 20 April 2027 is due at HMRC by 20 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 21 January 2028.
Is Onsen Energy Group Limited still trading?
Onsen Energy Group 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 Onsen Energy Group Limited do?
Onsen Energy Group Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Onsen Energy Group Limited?
Onsen Energy Group Limited was incorporated on 17 July 2012, 14 years ago.
What is the penalty if Onsen 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 Onsen Energy Group 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.