They are an auctioneer that sells surplus equipment from businesses & closed companies, they seem to run an online auction of electronics (i.e. test gear & TV broadcast gear etc,
no old radios) a couple of times a year, as always take note of the T&Cs, buyer fees and where the item is located, as that is where you collect from (most were at their Aunby site, but not all).
https://www2.ppauctions.com/page/16/sales
They had a number of 180 scopes/SA frames in the last sale (Nov), I just hope the lot of 181/2 SA stuff I didn't buy was in better condition than the older 140 series plug-ins I won.
David