That's nice woody ! We had hedgehogs visit our garden for years , they used to mate under our apple tree ! The male makes a coughing noise while he's persuing the female. The first time I heard it and went to investigate ,I only saw the male , thought he was poorly , caught him and put him in a box with straw and food, ready to take to the vet. Thinking about it , the other noise from the bottom of the garden was probably the female laughing her head off ! The little chap had, of course , escaped by morning.
Lainey