(The Downside of a Fence part 1)
But it seems it didn't.
We have developed a habit, once or twice a week, akin to 'riding of the bounds' where we follow the fence all the way around to check for animal damage, interference or attempts to violate our new barrier.
The evening after publishing this post we heard a crash outside; when we went to investigate our torch lit up two bright eyes in the dark. The next day we walked the bounds again and ascertained that there are many hiding places below the house, amongst brambles and blackthorn, with food sources such as blackberries, figs and wild apples close by: our guest could stay for a while.