Updating many events in iCal

gistfile1.applescript

set theEvents to {}

tell application "Calendar"
	tell calendar "Calendar"
		set theEvents to every event whose summary contains "IDM-" or summary contains "ICP-"
		
		repeat with theEvent in theEvents
			tell theEvent
				set location to "Dean Street, Bangor, Gwynedd, UK"
			end tell
		end repeat
	end tell
end tell