They are working with outdated, unsafe systems. It’s probably super stressful compared to running a modern network where you have a bunch of automated safety checks and know exactly where all the trains are.

Why is it called rugby if you use neither a rug nor a bee while playing the game 🤔

Yeah, I'm not sure, from the cast list he looks similar.

Looks like it may be Ray Davies who is presenting the game in the clip. I'm doubting that he actually programmed it :)

edit: prob not, found the scene with Ray Davies https://youtu.be/S9HKI1dU_Yo?t=2767