Japan intends to use the next G8 summit to propose a ban on government purchases of illegally-sourced timber.

The country also wants to see an international fund set up to help timber-producing nations introduce a tracking system for checking the source of wood products.

Other proposals to be made by Japan at the Gleneagles summit on July 6-8 include updating World Trade Organisation rules to curb trade of illegal wood and the issuing of export permits or logging certificates to prove goods are legally procured.

Britain is considering the inclusion of illegal logging and global warming on the agenda.