Missed it myself in the end! Went up to top of Foxhill, after sitting for a while, a chap on ******* said it wasn't departing BZZ till 1600; due to the low cloud level, we doubted whether it would ever appear, so went to visit friends at Chiseldon - then heard something on leaving theirs that could have been it - altho we prob wouldn't have seen it from Foxhill with that visibility.