SIC code 42120
Construction of railways and underground railways
SIC code 42120 · 6 new companies 2026-10-18 → 2026-10-25 · 60 in 90 days · 65 on record
SIC code 42120 covers construction of railways and underground railways. 60 UK companies chose it as a primary or secondary activity when incorporating in the last 90 days, led by London (7) and Liverpool (3). A company can list up to four SIC codes and change them on its confirmation statement.
Where (90 days)
- London 7
- Liverpool 3
- Dagenham 2
- Basingstoke 1
- Beckenham 1
- Birmingham 1
- Brighton 1
- Cardiff 1
- Chorley 1
- Crewe 1
- Croydon 1
- Doncaster 1
This week
| Company | City | Incorporated |
|---|---|---|
| ADTRACK FORMATION LTD | Manchester | 2026-10-24 |
| MANNTRAXX LTD | Liverpool | 2026-10-24 |
| AAN ENGINEERING LTD | Middlesbrough | 2026-10-21 |
| VTR ENGINEERING LTD | Leighton Buzzard | 2026-10-20 |
| SUBSTRUX ENGINEERING LTD | Wakefield | 2026-10-19 |
| TRACKSURE TRAINING LTD | Dumbarton | 2026-10-19 |
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Weekly export by postcode area →Related SIC codes (42xxx)
- 42990 — Construction of other civil engineering projects n.e.c. 457
- 42220 — Construction of utility projects for electricity and telecommunications 192
- 42110 — Construction of roads and motorways 146
- 42210 — Construction of utility projects for fluids 53
- 42910 — Construction of water projects 41
- 42130 — Construction of bridges and tunnels 12
How we count
The data comes from the UK public register of companies, reused under the Open Government Licence v3.0. Each night at about 02:10 UTC we collect the previous day's incorporations, add each company's filing deadlines from its record on the register, and publish the update by about 06:40 UTC.
“This week” means the seven days before today, by date of incorporation, in UTC. Cities are grouped by the place name in each company's registered office address, so a company is counted where its registered office is, which is not always where it trades.
Known gaps: companies dissolved or restored soon after incorporation, and records corrected late on the register, can take a day or more to show here. Last updated 25 October 2026.