- Companies
- Plumbers and heating engineers
- Hailsham
- Proteus (Technical Services) Limited
Proteus (Technical Services) Limited
- Company number
- 04938492
- Incorporated
- 21 Oct 200322 years trading
- Registered office
- 30/34 North Street, Hailsham, East Sussex, BN27 1DW
- Nature of business
- Plumbing, heat and air-conditioning installation
Proteus (Technical Services) Limited is a 22-year-old private limited company registered in Hailsham, company number 04938492, one of 34 plumbing and heating companies in Hailsham. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £7,685 (+14.9%) on the year before, to £59K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £138K against £78K owed within a year: 1.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £59K | £35K | £138K | £78K | 0 |
| 31 Dec 2024 | £52K | £21K | £97K | £45K | 0 |
| 31 Dec 2023 | £50K | £14K | £94K | £43K | 0 |
| 31 Dec 2022 | £86K | £24K | £192K | £105K | 0 |
| 31 Dec 2021 | £163K | £25K | £287K | £125K | 0 |
| 31 Dec 2020 | £156K | £64K | £302K | £147K | 0 |
| 31 Dec 2019 | £156K | £7,102 | £265K | £110K | 0 |
| 31 Dec 2018 | £157K | £69K | £342K | £187K | 1 |
| 31 Dec 2017 | £147K | £5,857 | £319K | £173K | 1 |
| 31 Dec 2016 | £160K | £59K | £398K | £241K | 1 |
Where Proteus (Technical Services) Limited is registered
The registered office is in Hailsham (BN27), in the Wealden local authority area, South East. Show BN27 1DW on a map.
Other trade companies in BN27
- Smithy’S Autos Mobile Mechanic LtdMechanics and garages
- Trinity Build Group LtdInstallers
- Brighton Laundry Lady LtdCleaning companies
- Corelink FM LtdProperty developers
- Grimebusters LtdCleaning companies
- Sequoia Fire Protection LimitedInstallers
- Eagle and Wolf Construction LtdBuilders
- Worcester Plumbing & Heating LtdPlumbers and heating engineers
Shared registered office
219 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 (Technical 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 30 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 04938492
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 21 October 2003 (22 years ago)
- Registered office
- 30/34 North Street, Hailsham, East Sussex, BN27 1DW
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 8 April 2026
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 Hailsham
Other active plumbing and heating companies registered in Hailsham.
- Puttick Plumbing and Heating Ltd2021
- R Taylor Plumbing & Heating Ltd2023
- Roger Vine Ltd2012
- Roselands Heating Limited1986
- Rubon Mechanical Services Limited2021
- Simes Plumbing & Heating Limited2016
- Stephen Woodley Heating & Plumbing Limited2008
- The Independent Heating Company Limited1987
All plumbing and heating companies in Hailsham · All trades in Hailsham · Plumbers and heating engineers across the UK
Frequently asked questions
When are Proteus (Technical Services) Limited's accounts due?
Proteus (Technical Services) Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Proteus (Technical Services) Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Proteus (Technical Services) Limited still trading?
Proteus (Technical 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 (Technical Services) Limited do?
Proteus (Technical Services) Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Proteus (Technical Services) Limited?
Proteus (Technical Services) Limited was incorporated on 21 October 2003, 22 years ago.
What is the penalty if Proteus (Technical 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 (Technical 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.