Telecommunications – Mobile telephone networks. The proceedings concerned the United Kingdom's maintenance in force of a restriction (the commercial use restriction) on the commercial use of a piece of telecommunications equipment known as a 'GSM gateway'. The claimants contended that the commercial use restriction amounted to a prohibition on the commercial use of GSM gateways and was in breach of European Union law. At first instance, the claim was dismissed, and the claimants appealed. The Court of Appeal, Civil Division, held that the judge had not erred in dismissing the claim.