On passing Yate by train recently I noticed a massive compound on the SOUTH side of the railway line - opposite and beyond the "Shire Way" access point.
I think a lot of people have been logging sightings here as "Shire Way", but to avoid confusion it should probably be more correctly referred to as something else - "Besom Lane AP".
http://www.ontrackplant.com/locations/yate-shire-way
http://www.ontrackplant.com/locations/yate-besom-lane