In April 2019 we reported that the Department, TfL and the previous Crossrail Ltd management team had focussed on a fixed delivery date of December 2018, which led to warning signs that programme was in trouble being missed or ignored.45 The Department told us that it was not falling into the trap of past behaviours which is why it is presenting the opening date as a range.46 However, with the expected opening window of services fast approaching, passengers and businesses will need clarity on what Elizabeth line services will be available and when they will start in order to adequately prepare. 45 Committee of Public Accounts, Crossrail: progress review, Ninety second Report of Session 2017–19, HC 2004, 3 April 2019 46 Q 25 Crossrail: A progress update 13 2 Benefits and lessons learned from the programme Achieving the benefits