I have just fitted two (very expensive) UK mains - 14 watt (120 watt tungsten equivalent, 28 watt CFL equivalent) LED luminaires in a building extension. I am now picking up intolerable interference on both AM and FM radios, throughout the house. Considering the cost, CE markings and other certifications and pedigree, this is very disappointing. I am plannning to try some delta suppressors and will report in due course. When I take the units down to fit the suppressors I will take some photos. Meanwhile any comments or experiences welcome.