"Yet our ParcelForce driver leaves items for collection from the local Post Office with no fee attached."
Usually yes, nut not this time, just from some anonymous private address.
The trouble with pickup from my local post office is that it negates the advantages of delivery.
The last parcel they sent to my post office was six bags of flour. As I pointed out to the supplier at the time, if I could carry six bags of flour I;d have bought them at a local shop, which is quicker and cheaper!