This answer applies to R1 Mk3 R1 Mk2 R2 Mk3 R2i Mk2 R4 Mk3 R4i Mk2 R7 Mk1 R7 Mk3
To check if this is the case, firstly try turning off your lighting to see if the situation improves. An article in Which? Magazine highlighted this issue and said that under the Electromagnetic Compatibility Regulations 2006, light bulbs which interfere with digital radios should not be sold. If new bulbs interfere with the reception on your radio then you should be entitled to money back or replacements, depending on when you bought them.
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