Interesting stuff from the Institute of Mechanical Engineers.
https://www.imeche.org/news/news-article/5-engineering-innovations-on-the-journey-to-the-elizabeth-line-opening
https://www.imeche.org/news/news-article/5-engineering-innovations-on-the-journey-to-the-elizabeth-line-opening
5 engineering innovations on the journey to the Elizabeth line opening
www.imeche.org