We have just been in the Post office to do a transaction and have picked up a leaflet about the proposed move.
At the moment it is classed as a 6 week 'Public Consultation - Branch Relocation' period (which started on 15th August).
The, 4 sided A4, leaflet also says 'I am pleased to tell you that if the move goes ahead, subject to consultation, the new premises which is currently empty will undergo a refurbishment to incorporate cards, stationery & gifts'.
I asked which unit they refer to and it is the one that is currently used as a charity furniture shop.
The leaflet gives several ways of contacting the relevant people so that you can express your opinion.
If anyone needs any more information I suggest picking up a leaflet next time you are passing Marple Post Office - as there is too much for me to put on here.