I have read all the replies including previous ones . I have SKY tv but have there filter on my phone connection.plus interference filter. I don't have phone and broadband with sky. I had to call BT for interference on my phone last week and it took them ages to find the fault. I don't think they have completely found the fault as phone still has interference like what is described in replies. I dare not call them again as I may be charged £99 if fault is due to sky filter. Will Sky just send me a filter if I ask and is it free of charge.