A revolutionary £19 billion underground railway is about to transform cross-London travel – and Scots are playing key roles in its development.

They include a Glasgow company responsible for the eye-catching new purple signs at some of the new stations on the east-west Elizabeth line, and one of the most senior executives at its owner Transport for London (TfL).

Meantime, TfL’s Glasgow-born director of operational readiness Peter McNaught has had a central role in preparations for the line’s opening.

“The Elizabeth line is going to transform travel in the city, increasing capacity and slashing east-west journey times in addition to making travel much more accessible for all.

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