Streaming music service Spotify is growing in the UK and soon may overtake iTunes as Europe's biggest digital music service, reports Music Week, which spoke to Spotify's European head of media relations Kevin Brown [Via The Guardian]. Spotify's growth in the UK is quickly accelerating with the service adding more than 1 million active users in the past four months, claims Brown. Many of these new customers are lucrative subscribers who are paying for the premium service instead of listening to the ad-supported, free version. Brown attribu