More than a decade after the infamous ‘royal prank’ call that ended in tragedy, former 2DayFM host Michael Christian has filed a lawsuit against Southern Cross Austereo.

The Daily Telegraph reports: Michael Christian and Mel Greig were presenting on 2Day FM on 4 December 2012 when they made the phone call to the King Edward VII hospital in London.

Princess Catherine, then the Duchess of Cambridge, had been admitted to the hospital for severe morning sickness ahead of her first child’s birth.

Christian alleges he was ordered by 2Day FM’s production team to make a prank call to the hospital and impersonate the then Prince Charles and Queen Elizabeth to try to gain access to the duchess.

Unexpectedly, their call was transferred by a nurse, Jacintha Saldanha, to the Duchess’ nurse who disclosed the Duchess’ private medical information.

He remained working for 2Day FM and did not pursue legal proceedings against them because of this promise, court documents read.

However, the firm failed to provide meaningful health support, did not start a public-relations campaign to rebuild his brand, and failed to offer meaningful opportunities or pay rises to reward his loyalty, he alleges.

Instead, he claims he was “gradually marginalised” within the organisation.