- Companies
- Civil engineering
- Porth
- Arch Utility Services (SW) Ltd
Arch Utility Services (SW) Ltd
- Company number
- 09686554
- Incorporated
- 15 Jul 201511 years trading
- Registered office
- Unit 2 Ynyshir Industrial Estate, Llanwonno Road, Porth, CF39 0HU
- Nature of business
- Construction of other civil engineering projects n.e.c.
Arch Utility Services (SW) Ltd is a 11-year-old private limited company registered in Porth, company number 09686554, one of 24 civil engineering contractors in Porth. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 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 up £170K (+35.9%) on the year before, to £645K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £1.2M owed within a year: 1.2 times cover.
- 81 employees on average, up from 72 the year before.
- 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 |
|---|---|---|---|---|---|
| 31 Mar 2026 | £645K | £274K | £1.5M | £1.2M | 81 |
| 31 Mar 2025 | £474K | £99K | £1.3M | £1.3M | 72 |
| 31 Mar 2024 | £840K | £226K | £1.3M | £893K | 50 |
| 31 Mar 2023 | £804K | £276K | £1.4M | £863K | 100 |
| 31 Mar 2022 | £428K | £88K | £1.3M | £1.2M | 100 |
| 31 Mar 2021 | £326K | £27K | £1.2M | £1.1M | 64 |
| 31 Mar 2020 | £235K | £74K | £872K | £760K | 38 |
| 31 Mar 2019 | £247K | £20K | £336K | £166K | 21 |
| 31 Mar 2018 | £185K | £82K | £369K | £258K | 12 |
| 31 Mar 2017 | £11K | £38K | £180K | £178K |
Public contracts won
Arch Utility Services (SW) Ltd has 4 public sector contract awards on record; the ones with their own published value total £2.9M, from 2021 to 2026. Source: Contracts Finder and Find a Tender award notices. For 3 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Carmarthenshire County Council3 awards
- Rhondda Cynon Taf CBC1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Carmarthenshire County Council | Dynamic Purchasing System for Drainage Investigations and CCTV Surveys | Ceiling, not shown | 16 Jan 2026 |
| Carmarthenshire County Council | Dynamic Purchasing System for Drainage Investigations and CCTV Surveys | Ceiling, not shown | 24 Jul 2024 |
| Carmarthenshire County Council | Sewerage Services & Remedial Works | Ceiling, not shown | 4 Sep 2023 |
| Rhondda Cynon Taf CBC | Provision of Sewer Cleaning and Inspection Services | £2.9M | 28 Jul 2021 |
Where Arch Utility Services (SW) Ltd is registered
The registered office is in Porth (CF39), in the Rhondda Cynon Taf local authority area, Wales. Show CF39 0HU on a map.
Other trade companies in CF39
- Nvme Detailing LimitedMechanics and garages
- Choctar LimitedBuilders
- J Cantwell Surfacing & Contracting LtdCivil engineering
- Ok Rail LtdCivil engineering
- Porth Ceilings & Interiors LtdFinishing trades
- Wydex LtdBuilders
- Time Lec Services LtdElectricians
- Arb-Scape Tree Surgery & Landscaping LtdLandscapers and gardeners
What happens if Arch Utility Services (SW) 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 09686554
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2015 (11 years ago)
- Registered office
- Unit 2 Ynyshir Industrial Estate, Llanwonno Road, Porth, CF39 0HU
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 5 August 2026
- Charges (mortgages)
- 1 outstanding of 4 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Porth
Other active civil engineering contractors registered in Porth.
- B.B.Civils & Labour Ltd2021
- C 2 Groundworks Limited2014
- D D C Civil Engineering & Construction Limited2013
- Darjen Contractors Ltd.2016
- Draftcopy Limited1998
- Ej Civil and Rail Ltd2016
- First Defence Traffic Management Ltd2021
- G W Rail Limited2019
All civil engineering contractors in Porth · All trades in Porth · Civil engineering across the UK
Frequently asked questions
When are Arch Utility Services (SW) Ltd's accounts due?
Arch Utility Services (SW) Ltd's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Arch Utility Services (SW) Ltd's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Arch Utility Services (SW) Ltd still trading?
Arch Utility Services (SW) 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 Arch Utility Services (SW) Ltd do?
Arch Utility Services (SW) Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Arch Utility Services (SW) Ltd?
Arch Utility Services (SW) Ltd was incorporated on 15 July 2015, 11 years ago.
Has Arch Utility Services (SW) Ltd won public sector contracts?
Yes. Arch Utility Services (SW) Ltd has 4 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £2.9M), most recently from Carmarthenshire County Council.
What is the penalty if Arch Utility Services (SW) 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 Arch Utility Services (SW) 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.