"plus vaccinated livestock cannot be exported to countries that themselves don't vaccinate"

Which wouldn't be such a bad idea anyway. Britain imports more meat than it exports. So why is it exporting the meat in the first place? All down to economics, but it's crazy economics.

I don't really trust technical fixes, but here's a New Scientist article about new vaccines that could mean the end of the mass slaughter policy, and maybe provide such a fix.