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Data / UK companies / Construction of railways and underground railways

Construction of railways and underground railways: 3,808 live UK companies with SIC code 42120

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

3,808 live UK companies list SIC code 42120, construction of railways and underground railways, in the Companies House snapshot dated 1 November 2026. 242 of them were incorporated in the last 12 months and 1,061 have an accounts due date that had passed, and 1,245 have a proposal to strike them off the register.

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

Get every construction of railways and underground railways companyWatch new construction of railways and underground railways incorporationsGet companies with overdue accounts

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.

  • 3,808Live companies
  • 242Incorporated in the last 12 months
  • 1,061Accounts overdue
  • 1,245Strike off proposed
  • 42120SIC code
  • 1 November 2026Snapshot

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
2022168
2023252
2024195
2025307
2026 so far200

By region

RegionLive companies
London1,266
South East735
East of England374
North West314
Wales261
West Midlands201
Yorkshire and The Humber185
Scotland180
East Midlands137
South West89
North East54
Northern Ireland11

Towns with the most construction of railways and underground railways companies

Towns with 100 or more live companies; a link opens the page for this industry in that town.

TownRegionLive companies
LondonLondon697
CardiffWales69
LiverpoolNorth West61
GlasgowScotland57
AshfordSouth East53
DoncasterYorkshire and The Humber53
BirminghamWest Midlands50
RomfordLondon45
SidcupSouth East44
DagenhamLondon43
ManchesterNorth West40
EdgwareLondon38
BarkingLondon37
Merthyr TydfilWales34
NottinghamEast Midlands33
WaterloovilleSouth East33
GravesendSouth East32
ErithSouth East30
LutonEast of England30
GraysLondon29
BasildonEast of England28
IlfordLondon28
ColchesterEast of England26
HarrowLondon25
ChathamSouth East21

Newest construction of railways and underground railways companies

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

CompanyNumberIncorporatedTownAccounts dueStatusSource
Caiden Construction Ltd1755227030 October 2026Doncaster30 July 2028Activefind-and-update.company-information.service.gov.uk
A&a Prime Ltd1754930928 October 2026Wellingborough28 July 2028Activefind-and-update.company-information.service.gov.uk
BDPL Civils Limited1754830828 October 2026Birmingham28 July 2028Activefind-and-update.company-information.service.gov.uk
Millsey Electrical Ltd1754553027 October 2026London27 July 2028Activefind-and-update.company-information.service.gov.uk
Adtrack Formation Ltd1753983524 October 2026Manchester24 July 2028Activefind-and-update.company-information.service.gov.uk
Manntraxx Ltd1753966524 October 2026Liverpool24 July 2028Activefind-and-update.company-information.service.gov.uk
AAN Engineering Ltd1753388221 October 2026Middlesbrough21 July 2028Activefind-and-update.company-information.service.gov.uk
VTR Engineering Ltd1753160920 October 2026Leighton Buzzard20 July 2028Activefind-and-update.company-information.service.gov.uk
Tracksure Training LtdSC90632419 October 2026Dumbarton19 July 2028Activefind-and-update.company-information.service.gov.uk
Substrux Engineering Ltd1752918319 October 2026Wakefield19 July 2028Activefind-and-update.company-information.service.gov.uk
Jbowenrail Ltd1752641616 October 2026Portsmouth16 July 2028Activefind-and-update.company-information.service.gov.uk
ECO Studies Ltd1751998914 October 2026Ebbw Vale14 July 2028Activefind-and-update.company-information.service.gov.uk
JL Equipment Ltd1751934814 October 2026Ilminster14 July 2028Activefind-and-update.company-information.service.gov.uk
JL Rail Ltd1751855713 October 2026Ilminster13 July 2028Activefind-and-update.company-information.service.gov.uk
RM Railway Ltd1751806213 October 2026Liverpool13 July 2028Activefind-and-update.company-information.service.gov.uk
Traction Rail Electrical Limited1751739213 October 2026Beckenham13 July 2028Activefind-and-update.company-information.service.gov.uk
Latpops Limited1751228910 October 2026Chorley10 July 2028Activefind-and-update.company-information.service.gov.uk
Bridgeford Engineering & Construction Ltd175091368 October 2026Wolverhampton8 July 2028Activefind-and-update.company-information.service.gov.uk
SFF Construction Ltd175071677 October 2026Widnes7 July 2028Activefind-and-update.company-information.service.gov.uk
J and a O'Sullivan Construction Ltd175055407 October 2026Whitstable7 July 2028Activefind-and-update.company-information.service.gov.uk
Sammy Rails Engineering Ltd175035126 October 2026London6 July 2028Activefind-and-update.company-information.service.gov.uk
L T Construction Services Limited1749145730 September 2026Wetherby30 June 2028Activefind-and-update.company-information.service.gov.uk
Rail Based Contracting Services Ltd1748560328 September 2026Crewe28 June 2028Activefind-and-update.company-information.service.gov.uk
ADD22 Ltd1747787623 September 2026Harrow23 June 2028Activefind-and-update.company-information.service.gov.uk
AH Rail and Civils Limited1747691823 September 2026Brighton23 June 2028Activefind-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.