Thank you Nick,
have found only some unspecific reports in the ULTRA messages concerning German
attacks on harbours in North-Africa (DEFE 3/797, image 561; DEFE 3/798, image 138).
I rather think the Ju's were shot down by nightfighters from No. 255 Squadron, RAF.
But no entry for this period in the units scoresheet (
www.255.org.uk).
Obviously a gap. The night missions from 20 Dec 1942 to 02 Jan 1943 are not documented.