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The UK DAB National transmission network is primarily controlled by Arqiva, a major communications infrastructure company. Arqiva owns and operates the Digital One multiplex, which has been broadcasting since 1999 and covers over 90% of UK households. They also manage the Sound Digital multiplex, launched in 2016, which provides additional digital radio services.
Additionally, Ofcom, the UK's media regulator, oversees broadcasting licences for digital radio ensemble operators and stations.
Arqiva - TV, Radio, Satellite Data Communications & Smart Metering