Data transmission services over telecommunications networks; digital network telecommunications services; fibre optic telecommunications services; hire of telecommunications apparatus; hire of telecommunications installations; telecommunications; telecommunications advisory services; telecommunications brokerage; telecommunications consultancy; telecommunications services for the distribution of data; video conference services (telecommunications services); telecommunications; advisory services relating to telecommunications; cellular telecommunications services; consultancy services relating to telecommunications; optical fibre telecommunications services; telecommunications; telecommunications advisory services; telecommunications brokerage; telecommunications consultancy; telecommunications security (providing secure connections and access including to computers and the global computer network); telecommunications services by satellite; telecommunications services for the distribution of data; video conference services (telecommunications services)