1)
From "Malta : the Hurricane years" ( p355 the last par. of the 24/12/41 entry)
"Meanwhile three Blenheims from 107 Squadron attacked schooners in Zuara
harbour on this date. Two of the bombers were hit, Sgt. E. Crossley's aircraft
crashing, while Plt.Off. I. Paul in the second aircraft was killed by a cannon shell (probably 20mm Flak)"
2)
Pilot's name probably Mockridge rather than Mockbridge :
http://users.cyberone.com.au/clardo/ga_mockridge.html