Sale of Guardian's radio stations to be investigated

Three of Global Radio's rivals have called on the UK's competition regulator to block the UK radio major's bid to expand further by acquiring The Guardian's radio company, which operates the Real and Smooth radio brands, for a sum thought to be in the region of £70 million. The purchase gives Global control of more than 50% of the radio advertising market in the UK and more than 50% of listening in key markets like London and Manchester.