Hi again - yet another update ...
How weird is this ? ...
Having heard nothing at all from the seller after 4 weeks had passed since the Amiga was returned to him, I contacted Parcel Force out of curiosity, just to make sure the Amiga did actually get sent back to him. Eureka !!! After several calls and and a couple of call-backs, it transpired that the Amiga was sitting in Parcel Force's depot with no label on it, so they did not know where to send it back to. So it had just been sitting there in the depot for 4 weeks, doing nothing and going nowhere.
So, I take back the moaning re the sender not responding to my emails (although you would have thought he would at least have replied to at least one of the emails I sent, saying he had never received it back etc ! Could have saved me a lot of time and worry). Anyway, I arranged for Parcel Force to re-deliver the machine and it turned up today. The box is a bit battered and the 2nd box of software is still "in transit" and on its way to me. I haven't checked it yet so wish me luck - hopefully the 1200, the PPC card and BVision will all be ok having been hauled up and down the UK's motorways for several weeks.
This is definitely the end of this post.
Phew !!!