Well these are Ex UK military long range thermal imaging cameras with 320 x 240 pixel 30fps imaging sensors. Who made the sensor array often determines who's export regulations apply. As UK Ex military equipment it would likely come under NATO distribution rules and Dual Use Technology regulations as a minimum. The problem is, they are very much bespoke for the Military so I have no idea whether specific export restrictions apply. If, by some weird chance, a person was caught leaving a UK airport with such a camera, I doubt the inspecting officer would know what it is or any regulations applicable. The units carry no export warnings. That said, I have no detail of the restrictions applicable to these specific cameras. Hence why I personally would not wish to send them outside the UK. I will not break DUT, ITAR or NATO technology distribution regulations.
A side story that may be of interest to our Russian members....
I was offered Gen 2+ night vision tank gun sights whilst on tour in Moscow Circa 1998. The same situation applied there. I was not sure how my Russian hosts would respond as they saw a military gun sight pass through the airport X-Ray. Russian inspectors know what a gun sight looks like ! I did not fancy getting arrested for espionage and ending up in a Russian prison, even for a day. The gun sights were often stolen in the Ukraine or Russia whilst the tanks were in transit on slow moving trains. All manner of bits were ripped off of those tanks and appeared in Ukrainian and Russian 'technology' Markets.
In short..... if in doubt, always play safe and apply common sense. Military kit should stay within your countries borders unless you have clear guidance on the regulations applicable to such equipment.
Fraser