SIC for Construction of railways and underground railways

What is the UK SIC for Construction of railways and underground railways activities?

The SIC code for companies engaged in activities related to Construction of railways and underground railways is 42120.

Which section does the SIC code 42120 belong to?

The UK SIC code 42120 belongs to section F, which groups together the activities related to Construction.

Therefore, the activities of Construction of railways and underground railways are grouped in the UK Standard Industrial Classification of economic activities in section A under code 42120.