Due to the inquiry's own long delay and mounting costs, it was accused of turning into a "bigger scandal than the one it was set up to look into in the first place".
[7] Anticipating some complexity around legal representation of the parties involved, Lord Hardie asked core participants to consider what conflicts of interest might exist and provide written responses to the inquiry by 27 November.
[8] On 2 November 2022, over 8 years after its establishment, the inquiry issued warning letters to persons it proposed to make significant or explicit criticism of.
[10] At the first preliminary hearing on 6 October 2015, Lord Hardie revealed that the parties who had applied for and been granted core participant status were: Bilfinger Construction UK, Carillion Utility Services, City of Edinburgh Council, DLA Piper Scotland, Parsons Brinckerhoff, Scottish Ministers and Siemens.
[8] Three expert witnesses gave evidence: Stuart Fair, CIPFA; Bent Flyvbjerg, Professor of Major Programme Management at University of Oxford's Saïd Business School; and David Rumney, consultant in light rail/tramway engineering.
[12] In May 2023, it was confirmed that the final report had been completed and sent to the publishing company for printing, a process expected to take several weeks.
[14] In August 2015, City of Edinburgh Council announced that they expected to spend up to £2 million participating in the inquiry.