Crossrail might not launch until March 2021

London's multi-billion pound Crossrail project has pushed back its launch date again and may now not open until March 2021.Plans for an east-west line across the capital have repeatedly been delayed since missing the original target date of December 2018.Crossrail said on Thursday that it had now identified a "six-month delivery window" for the central section of the line between Paddington and Abbey Wood, with a midpoint at the end of 2020.