The long-awaited report from a public inquiry into the project calls for new powers to prosecute businesses that make “false statements” to councillors, and substantial changes in the way Scotland oversees tram projects in future.

Lord Hardie, a retired judge, concluded that Tie, the company originally set up to deliver the line, but also Edinburgh council and Scottish ministers shared the blame for its huge cost overruns, delays and the resulting damage to the city’s economy.

“Poor management and abdication of responsibility on a large scale have had a significant and lasting impact on the lives and livelihoods of Edinburgh residents, and the reputation of the city,” Hardie said.

Cammy Day, the Edinburgh council leader, apologised for “the serious mistakes” the council had made and admitted the debacle had seriously affected residents and damaged the city’s reputation.

Want to see more SNP fails? – Health Matters