Rabid Cougar said:
Kampfgeschwader that took part in the Exeter Blitz of April/May1942 utilized He-111's and Do-17's.
This prompted me to do some digging. Earlier comments that I made were right off the top of my head with no details as to squadron assignments, just my understanding of which aircraft the Luftwaffe had available that could potentially deliver the SC1000 bomb.
III/KG2 operated Do217 bombers out of Schipol, the Netherlands during the time of the Exeter Blitz per at least one source I was able to locate. That Dornier could carry 1 of these bombs. These belonged to Luftflotte 3. KG2 also operated the Do17 light bomber as well as the Junkers 188, a development of the Ju88 that was not available in April 1942.
I didn't find any reference to the KG that participated in the Exeter raids operating He111's, but not discounting what you're saying. These kind of records are often difficult to locate, and when one does find something, I wonder how accurate they really are. But based on what I found, I'd say the Do217 was the bomber - again, not definitive by any means.