Judge Greene was sworn into office before the Lord Chief Justice, Sir Declan Morgan, on Monday.

He began his legal career at the Bar of England and Wales in 1990 on the South Eastern Circuit, the largest and most influential of the six circuits. He called to the Bar of Northern Ireland in 1996, appearing in mainly criminal cases.

In 2014, Judge Greene took silk and dealt with complex frauds, historic sex and murder cases. He specialised in cases involving vulnerable witnesses.

He has frequently appeared in the Court of Appeal throughout his career in both England and Wales and in Northern Ireland.

Judge Green was called to the Bar of Ireland in 2019.