In Australia (WA especially) quarantine regulations are very strict. I thought over the top until I moved here. Then you learn parts of Aus have diseases that others (mostly WA) do not and that they want to keep it that way.
When we moved here they went through our posessions very careully - they found some sprayed pine cones (part of our Christmas decorations) - they had to be "cleaned" (for a fee).
Perhaps the UK being an island needs to take a similar stance (as with Rabies)?
Just a thought!
R.