Not 100% but I suspect it is Marri Wood Park given it’s a biodynamic vineyard and they recently had their back vintage Chenin (which is excellent) on the Fo.
Cheers.
Heydon Estate W.G Grace
High quality producer, next to Vasse Felix and Thompson Estate. Wine made my Mark Messenger (Juniper Estate).
Nice wine. Original owners recently sold business and new owners are rebranding.
cheers