Countdown to Crossrail. The dedicated team racing against time to complete the Elizabeth Line. Battling with the ballooning budget and looming launch, can they keep London moving?

I remember when coming down in the Crossrail tunnels involved helmets, steel boots, a safety briefing and you had to carry your own breathing apparatus in case there was a gas leak. It used to be ...

This third series of the exclusive documentary charts the inside story of Crossrail - one of the most ambitious engineering feats in Britain since the time of Brunel.