Some info here:
https://michellecooper-writer.com/bl...he-home-guard/
“. . . on the night of 2/3 June 1940, LDVs shot and killed four motorists at separate locations; on 22nd June it was reported that two motorcyclists and their passengers had been killed and wounded in the north of England and in Scotland; on 26 June an ARP [Air Raid Precautions] warden was shot dead when he ignored (or maybe didn’t hear) an LDV challenge; and in Romford in Essex a car exhaust backfiring prevented the driver hearing the command to stop: four passengers were shot dead and a fifth seriously wounded.”1