Purple Emperor at Savernake

[jonno]

I am hoping to visit Fermyn in the near future for PE having had brief views only last year at Bentley Wood. Savernake is much closer to home and is also on my radar as it has a small population, but there doesn't seem to be much info around on how best to see them apart from a few references to sightings near the Column

Can anyone help me please (reply or PM) with some more detailed on-site directions and tips please?

Much appreciated

Jonno