Environment frequently relies on consultants, for everything from international trade law advice to national resource management strategies. Thirty-six companies were identified, earning a combined $2.5 million in 2013-2014. The highest spending of the four years examined amounted to $2.8 million in 2012-2013, significantly up from $1.4 million in 2005-2006.

The top earning companies over two years (2013-2014 and 2012-2013) were:

Environment downloadable data spreadsheet (Excel file)