Back in April 2018 we asked our readers to send us their suspect LED lamps so we could investigate how much interference they actually generated. This resulted in a decent number of different brands of lamp in the post. The EMC-EMF Commission from VERON (Association for Experimental Radio Research in The Netherlands) kindly offered to subject these lamps to an EMC pre-compliance test to see if the LED lamps conformed to the EN 55015 European standard.