The UK's four leading mobile operators were given clearance yesterday to take a challenge over the EU roaming law to the European Court of Justice. 02, Vodafone, Orange and T-Mobile allege that Viviane Reding, European commissioner for telecoms, had no legal right to introduce the law, which forced the operators to cut the charges they impose on customers for calls outside their home countries. A London high court judge agreed to refer the issue to the European court of justice.

Andrew Parker, London