If you consider BBC and the Guardian to be "acceptable" sources. There is a big tiff going on right now about night vision equipment found in them--is it Brit, did it come from Iran, or not?
http://news.bbc.co.uk/1/hi/uk/5269918.stmNight-vision equipment believed to be British has been discovered in Hezbollah command bunkers in southern Lebanon, Israeli forces have said.
The Foreign Office is trying to ascertain the kit manufacturer and how it may have ended up in militant hands.
It is thought that the equipment was not among a batch sold to Iran in 2003 under a special export licence for use against drug smugglers.
The government only permits supply of such equipment for non-military use.
The Times said checks were being made to compare serial numbers on the equipment found by the Israelis with the ones legitimately exported to Iran. .....
http://www.guardian.co.uk/uklatest/story/0,,-6028036,00.html
...There was nothing to suggest they were part of a batch sold by Britain to Iran in 2003 under a special export licence, a source said.
Reports that Israel had made a formal protest to the British Government were also untrue....