- Company number
- 13023516
- Incorporated
- 16 Nov 20205 years trading
- Registered office
- King Arthurs Court Maidstone Road, Charing, Ashford, Kent, TN27 0JS
- Nature of business
- Construction of domestic buildings
Proteus Building Services Limited is a 5-year-old private limited company registered in Ashford, company number 13023516, one of 308 building contractors in Ashford. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 £11K (+21.4%) on the year before, to £62K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £324K against £320K owed within a year: 1.0 times cover.
- 10 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £62K | £41K | £324K | £320K | 10 |
| 30 Jun 2024 | £51K | £78K | £205K | £192K | 4 |
| 30 Jun 2023 | -£35K | £0 | £20K | £55K | 0 |
| 30 Jun 2022 | -£33K | £2,553 | £42K | £75K | 0 |
| 30 Jun 2021 | £1 | 0 |
Where Proteus Building Services Limited is registered
The registered office is in Ashford (TN27), in the Ashford local authority area, South East. Show TN27 0JS on a map.
Other trade companies in TN27
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- Cad Mechanical LtdPlumbers and heating engineers
- Park View Property Developments LtdProperty developers
- Millhouse Landscapes LtdLandscapers and gardeners
- Air & Water Services LtdPlumbers and heating engineers
- MLG Flooring Contractors LtdFloor and wall tilers
Shared registered office
193 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 Proteus Building 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 13023516
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 November 2020 (5 years ago)
- Registered office
- King Arthurs Court Maidstone Road, Charing, Ashford, Kent, TN27 0JS
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 9 October 2025
- Previous names
- Fern and Form Limited (until 10 Sep 2023)
Imperium Facilities Management Ltd (until 1 Jul 2021)
Imperium Construction Limited (until 16 Mar 2021)
Imperium Construction Holdings Limited (until 30 Dec 2020)
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 in Ashford
Other active building contractors registered in Ashford.
- R D Properties Developers Ltd2024
- R&MB Construction Ltd2017
- R.J. Barwick Limited1954
- R.J. Gibbs & Sons Limited2009
- Raf Building & Construction Limited2016
- RBJ Construction Services Ltd2019
- Rcej Construction Limited2018
- Re Solutions Kent Ltd2019
All building contractors in Ashford · All trades in Ashford · Builders across the UK
Frequently asked questions
When are Proteus Building Services Limited's accounts due?
Proteus Building Services Limited's next accounts are due at Companies House by 31 March 2027 (in 170 days), covering the period to 30 June 2026.
When is Proteus Building Services Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Proteus Building Services Limited still trading?
Proteus Building 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 Proteus Building Services Limited do?
Proteus Building Services Limited is registered under Construction of domestic buildings (SIC 41202).
How old is Proteus Building Services Limited?
Proteus Building Services Limited was incorporated on 16 November 2020, 5 years ago.
What is the penalty if Proteus Building 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 Proteus Building 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.