- Companies
- Property developers
- Newbury
- Biowatt Site Services Limited
Biowatt Site Services Limited
- Company number
- 09835337
- Incorporated
- 21 Oct 201510 years trading
- Registered office
- 2 Old Bath Road, Newbury, Berkshire, RG14 1QL
- Nature of business
- Development of building projects
Biowatt Site Services Limited is a 10-year-old private limited company registered in Newbury, company number 09835337, one of 104 property development companies in Newbury. Its next accounts are due at Companies House on 29 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
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 £658K (-165.2%) on the year before, to -£1.1M.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- 18 employees on average, up from 15 the year before.
- Balance sheets on record for 10 years, 2016 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | -£1.1M | £48K | £74K | 18 | |
| 31 Dec 2023 | -£398K | £21K | £32K | 15 | |
| 31 Dec 2022 | -£341K | £3,958 | £29K | 14 | |
| 31 Dec 2021 | -£371K | £32K | £78K | ||
| 31 Dec 2020 | -£153K | £333K | £484K | 8 | |
| 30 Jun 2020 | -£401K | £146K | £614K | 0 | |
| 31 Dec 2019 | £58K | £537K | £546K | 9 | |
| 31 Dec 2018 | -£141K | £88K | £233K | 12 | |
| 31 Dec 2017 | £95K | £186K | £93K | ||
| 30 Dec 2016 | £560 | £54K | £58K | £58K |
Where Biowatt Site Services Limited is registered
The registered office is in Newbury (RG14), in the West Berkshire local authority area, South East. Show RG14 1QL on a map.
Other trade companies in RG14
- Budova LtdCivil engineering
- Keystone Commercial Design LtdBuilders
- Sama Properties LtdProperty developers
- Waymarc LimitedMotor traders
- Dorneywood Consulting LimitedProperty developers
- Fortis One LimitedProperty developers
- Startech Auto Care LtdMechanics and garages
- Atl Premium Cleaning & Painting Services LtdPainters and decorators
Shared registered office
73 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 Biowatt Site Services 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 09835337
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2015 (10 years ago)
- Registered office
- 2 Old Bath Road, Newbury, Berkshire, RG14 1QL
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 29 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 10 November 2025
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Newbury
Other active property development companies registered in Newbury.
- Bob Brewer Limited2008
- Brimstone Living 3 Limited2017
- Brimstone Living 4 Limited2020
- Brimstone Living 5 Ltd2022
- Brimstone Living 6 Ltd2024
- Brimstone Living 8 Ltd2025
- Brimstone Living Ltd2013
- Brynmellin Land Investments Limited2003
All property development companies in Newbury · All trades in Newbury · Property developers across the UK
Frequently asked questions
When are Biowatt Site Services Limited's accounts due?
Biowatt Site Services Limited's next accounts are due at Companies House by 29 December 2026 (in 77 days), covering the period to 29 March 2026.
When is Biowatt Site Services 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 31 December 2025, due by 31 December 2026, and one for the period to 29 March 2026, due by 29 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Biowatt Site Services Limited still trading?
Biowatt Site Services 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 Biowatt Site Services Limited do?
Biowatt Site Services Limited is registered under Development of building projects (SIC 41100).
How old is Biowatt Site Services Limited?
Biowatt Site Services Limited was incorporated on 21 October 2015, 10 years ago.
What is the penalty if Biowatt Site Services 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 Biowatt Site Services 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.