- Companies
- Civil engineering
- Swansea
- Avarix Limited
Avarix Limited
- Company number
- 16500001
- Incorporated
- 5 Jun 20251 year trading
- Registered office
- 60 Golwg Y Mynydd, Godrergraig, Swansea, SA9 2DN
- Nature of business
- Construction of roads and motorways; Management consultancy activities other than financial management; Other engineering activities; Renting and leasing of other machinery, equipment and tangible goods n.e.c.
Avarix Limited is a 1-year-old private limited company registered in Swansea, company number 16500001, one of 71 civil engineering contractors in Swansea. Its next accounts are due at Companies House on 5 March 2027, and its first CT600 is due at HMRC on 4 June 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Public contracts won
Avarix Limited has one public sector contract award on record (2026). Source: Contracts Finder and Find a Tender award notices. For all 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.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Affinity Water Limited | UVDB Powered by Achilles QUDM for Goods, Works and Services | Ceiling, not shown | 19 Aug 2026 |
Where Avarix Limited is registered
The registered office is in Swansea (SA9), in the Neath Port Talbot local authority area, Wales. Show SA9 2DN on a map.
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- Cyfyng Road Developments LtdFinishing trades
- Orwell’S Accident Repair LtdMechanics and garages
- WLM Car and Commercial Services LtdMotor traders
- Tom Graham Maintenance LtdFinishing trades
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- TD Heating Solutions LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Avarix Limited.
- Avarix Highways Engineering LimitedCivil engineering
What happens if Avarix 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 5 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Mar 2027 to 5 Apr 2027 | £150 |
| 1 to 3 months late | 6 Apr 2027 to 5 Jun 2027 | £375 |
| 3 to 6 months late | 6 Jun 2027 to 5 Sep 2027 | £750 |
| More than 6 months late | From 6 Sep 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
- 16500001
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 June 2025 (1 year ago)
- Registered office
- 60 Golwg Y Mynydd, Godrergraig, Swansea, SA9 2DN
- Nature of business
- Construction of roads and motorways (SIC 42110)
Management consultancy activities other than financial management (SIC 70229)
Other engineering activities (SIC 71129)
Renting and leasing of other machinery, equipment and tangible goods n.e.c. (SIC 77390) - Year end
- 30 June (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 4 June 2026
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 Swansea
Other active civil engineering contractors registered in Swansea.
- B.E.A. Jones Ltd2003
- Beacons Electrical Engineering Ltd2016
- Beauden B Rail Ltd2023
- Benn Engineering Ltd2019
- Bisp Civil Engineering Ltd2020
- C C M Wields Ltd2023
- CB3 Consult Limited2011
- D & M Carpentry and Construction Limited2026
All civil engineering contractors in Swansea · All trades in Swansea · Civil engineering across the UK
Frequently asked questions
When are Avarix Limited's accounts due?
Avarix Limited's next accounts are due at Companies House by 5 March 2027 (in 144 days), covering the period to 30 June 2026.
When is Avarix 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 4 June 2026, due by 4 June 2027, and one for the period to 30 June 2026, due by 30 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Avarix Limited still trading?
Avarix 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 Avarix Limited do?
Avarix Limited is registered under Construction of roads and motorways (SIC 42110); Management consultancy activities other than financial management (SIC 70229); Other engineering activities (SIC 71129); Renting and leasing of other machinery, equipment and tangible goods n.e.c. (SIC 77390).
How old is Avarix Limited?
Avarix Limited was incorporated on 5 June 2025, 1 year ago.
Has Avarix Limited won public sector contracts?
Yes. Avarix Limited has one contract award from public bodies on Contracts Finder and Find a Tender, most recently from AFFINITY WATER LIMITED.
What is the penalty if Avarix 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 Avarix 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.