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?

Crossrail was the industry's mega star. The largest infrastructure project in Europe once had its own documentary and was even the backdrop for adverts for nice 4x4s. But the project's catchphrase ...

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.