Episode 2 (S04E02)

The episode centers on Jim Forrest, an 83-year-old site manager who is among the most seasoned engineers involved in the project. Having been part of the Whitechapel Station construction since 2009, Jim has witnessed the entire journey, from the initial tunnel boring and concrete pouring to the assembly of the station's steel framework. His vast experience and insights provide a unique perspective on the challenges and triumphs of this significant undertaking.