Hi Nic and Penny,
You are certainly right on the unpredictable part. Last night we had 50 videos. The night before 1 and the night before that 2. The hedgie hut was moved to a new location, partially amongst the foliage and has proved a success, being used on the first night. At the old location by the willow they never ever visited it. I was told a Southerly entrance was best for them. The entrance is now more Northerly and they are using it. We also think we know why there were less sightings. I have mown the lawn around the apple trees and of course in the process severed several of the apples. This attracts slugs, snails etc and therefore would attract the hedgies. When we took the dog out for her last minute ablutions last night, she certainly showed an avid interest towards the trees. Thank you for your comments.