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Data / UK companies / Construction of railways and underground railways / Wales

Construction of railways and underground railways companies in Wales: 261 live companies

Updated November 7, 2026. Source: Companies House Free Company Data Product.

261 live companies in Wales list SIC code 42120, construction of railways and underground railways, in the Companies House snapshot dated 1 November 2026. 10 were incorporated in the last 12 months and 129 have an accounts due date that had passed.

The request: Every company in Wales with SIC code 42120, construction of railways and underground railways, incorporated since 2025, with registered address and accounts due dates. $10 of work on sign-up, no card.

Get construction of railways and underground railways companies in WalesWatch new construction of railways and underground railways incorporations in Wales

SpecStream is the live web data engine for teams and agents. It reads the Companies House free company data every month, and this page is that reading. Ask for the companies you track by industry, place or incorporation date and each new company, strike off proposal or overdue accounts date arrives in your sheet, CRM, Slack or agent.

  • 261Live companies
  • 10Incorporated in the last 12 months
  • 129Accounts overdue
  • 141Strike off proposed

Incorporations per year

Companies incorporated in each year that are still live in the 1 November 2026 snapshot. Companies that closed earlier are not counted, so older years read low.

Year incorporatedLive companies
202215
202312
20249
202512
2026 so far9

Towns

TownLive companies
Cardiff69
Merthyr Tydfil34
Porth16
Newport14
Pontypridd13
Tonypandy12
Aberdare9
Swansea8
Bridgend7
Mountain Ash7
Pontyclun7
Barry5
Pontypool5
Bargoed4
Caerphilly4
Neath4
Rhyl4
Treorchy4
Blackwood3
Hengoed3
Cardigan2
Ebbw Vale2
Tredegar2
Abergavenny1
Ammanford1

Newest construction of railways and underground railways companies in Wales

Newest first. Each row links to the Companies House record.

CompanyNumberIncorporatedTownAccounts dueStatusSource
ECO Studies Ltd1751998914 October 2026Ebbw Vale14 July 2028Activefind-and-update.company-information.service.gov.uk
Lee.T73 Rail Ltd1745967015 September 2026Swansea15 June 2028Activefind-and-update.company-information.service.gov.uk
OK Rail Ltd1742260126 August 2026Porth26 May 2028Activefind-and-update.company-information.service.gov.uk
CA54 Rail Ltd173863406 August 2026Tonypandy6 May 2028Activefind-and-update.company-information.service.gov.uk
Logue Rail Limited173834215 August 2026Cardiff5 May 2028Activefind-and-update.company-information.service.gov.uk
Frontline Vegetation Ltd1721637213 May 2026Blackwood13 February 2028Activefind-and-update.company-information.service.gov.uk
McLellan Services Ltd1718999429 April 2026Newport29 January 2028Activefind-and-update.company-information.service.gov.uk
Ruby Red Consulting Ltd1704169218 February 2026Porth18 November 2027Activefind-and-update.company-information.service.gov.uk
Unwaith ETO Limited1696962117 January 2026Pontyclun17 October 2027Activefind-and-update.company-information.service.gov.uk
Railzone Ltd1687461425 November 2025Blackwood25 August 2027Activefind-and-update.company-information.service.gov.uk
Careg Ltd1670929410 September 2025Cardigan10 June 2027Activefind-and-update.company-information.service.gov.uk
Lakc Solutions Ltd166956304 September 2025Cardiff4 June 2027Activefind-and-update.company-information.service.gov.uk
Louand Rail Ltd1667993228 August 2025Cardiff28 May 2027Activefind-and-update.company-information.service.gov.uk
Joe Nettle Rail Ltd1665803818 August 2025Merthyr Tydfil18 May 2027Activefind-and-update.company-information.service.gov.uk
Deejay Solutions Ltd1664711013 August 2025Cardiff13 May 2027Activefind-and-update.company-information.service.gov.uk
96LOOK Limited166291755 August 2025Blaenavon5 May 2027Activefind-and-update.company-information.service.gov.uk
V3 Rail & Civils Ltd166220341 August 2025Barry1 May 2027Activefind-and-update.company-information.service.gov.uk
KR Cables Ltd1652062116 June 2025Pontyclun16 March 2027Activefind-and-update.company-information.service.gov.uk
Alsaba Ltd1646840322 May 2025Cardiff22 February 2027Strike off proposedfind-and-update.company-information.service.gov.uk
Porter Solutions Ltd1620546224 January 2025Newport31 October 2027Activefind-and-update.company-information.service.gov.uk
Price Railway Contractors Ltd1619396020 January 2025Caerphilly31 October 2027Activefind-and-update.company-information.service.gov.uk
Williams Contracting Ltd1608122214 November 2024Prestatyn31 August 2027Activefind-and-update.company-information.service.gov.uk
Metdem Group Limited160577144 November 2024Ponty-Y Clun31 August 2027Activefind-and-update.company-information.service.gov.uk
Tommy's Bar Limited160031617 October 2024Merthyr Tydfil31 July 2027Activefind-and-update.company-information.service.gov.uk
RDL Civils Ltd1590832420 August 2024Tonypandy31 May 2027Activefind-and-update.company-information.service.gov.uk
NJ Rail Ltd1579626123 June 2024Porth31 March 2027Activefind-and-update.company-information.service.gov.uk
Planesight Ltd156197725 April 2024Pontyclun5 January 2026Activefind-and-update.company-information.service.gov.uk
Spidsqure Consult Ltd1559129724 March 2024Cardiff31 December 2026Strike off proposedfind-and-update.company-information.service.gov.uk
Cymrubear Construction Ltd155374983 March 2024Merthyr31 December 2027Activefind-and-update.company-information.service.gov.uk
GW Rail Solutions Ltd1544079324 January 2024Porth30 January 2027Activefind-and-update.company-information.service.gov.uk
Martin Signalling Ltd1531186127 November 2023Builth Wells31 August 2027Activefind-and-update.company-information.service.gov.uk
C C M Wields Ltd1531168927 November 2023Swansea31 August 2027Activefind-and-update.company-information.service.gov.uk
Emtage Rail Ltd1530966227 November 2023Pontypridd31 August 2027Activefind-and-update.company-information.service.gov.uk
Kunzgaj Resources Ltd151163945 September 2023Cardiff30 June 2027Activefind-and-update.company-information.service.gov.uk
Dynamic Rail Civils Ltd1496402727 June 2023Caerphilly31 March 2028Activefind-and-update.company-information.service.gov.uk
L.C Welding Ltd149239858 June 2023Newport31 March 2027Activefind-and-update.company-information.service.gov.uk
Mpaul Welding Ltd149119052 June 2023Porthcawl7 March 2027Activefind-and-update.company-information.service.gov.uk
J4 Groundworks Ltd1488654522 May 2023Milford Haven29 February 2028Activefind-and-update.company-information.service.gov.uk
Trydan Rail Ltd1481176918 April 2023Blackwood31 December 2026Activefind-and-update.company-information.service.gov.uk
RMS Monitoring Ltd146973881 March 2023Tonypandy31 December 2026Activefind-and-update.company-information.service.gov.uk
Beauden B Rail Ltd1466705416 February 2023Swansea30 November 2026Activefind-and-update.company-information.service.gov.uk
Hardcastle Rail Ltd1460812120 January 2023Maesteg31 October 2027Activefind-and-update.company-information.service.gov.uk
JCR Rail Limited145335379 December 2022Swansea30 September 2027Activefind-and-update.company-information.service.gov.uk
LSJK Ltd145291868 December 2022Pontypridd30 September 2027Activefind-and-update.company-information.service.gov.uk
RJ Rail & Civils Ltd145271897 December 2022Ammanford30 September 2027Activefind-and-update.company-information.service.gov.uk
CJS Signalling Ltd1451645730 November 2022Tonypandy31 December 2027Activefind-and-update.company-information.service.gov.uk
ILJ Signalling Ltd1450275023 November 2022Aberdare31 December 2027Strike off proposedfind-and-update.company-information.service.gov.uk
Draig Rail Ltd1448041312 November 2022Newport30 April 2028Activefind-and-update.company-information.service.gov.uk
Massey Signalling Ltd1436788421 September 2022Rhyl31 May 2027Activefind-and-update.company-information.service.gov.uk
Ajlrailandcivils Ltd143455378 September 2022Merthyr Tydfil30 June 2026Strike off proposedfind-and-update.company-information.service.gov.uk

Contains public sector information licensed under the Open Government Licence v3.0. Counts are of live companies in the Companies House snapshot dated 1 November 2026. The snapshot holds basic company data only: no officers and no persons with significant control. A company is counted under each SIC code it lists, up to four. A region is the part of the UK a postcode area mostly falls in. This page uses Companies House data and is not endorsed by Companies House. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.