Re-reading more of Cramp's book on Midland, it seems that they narrowly missed buying DC6-Bs from the US, and only bought the Argonauts from a liquidation sale as they were very cheap.
However, the maintenance costs were much higher, overhauls more expensive, and, as Capt Cramp (who flew them) asserts, their range was inferior to the DC4, never mind the DC6!
Would anyone like to comment?
r