Alex
Morgala lists:
HN237 with 302 Sq in 1944
R9589 with 318 Sq in 1943
As you already know, the Anson File by Air Britain does not list any Ansons as serving with these units and I presume it is not necessary they were officially transferred, they could have belonged to the base or been on loan which was not recorded.
I have however not gone through the book's list one by one....
Cheers
Stig