 DAB radio stations in the United Kingdom are broadcast on a number of frequency blocks on VHF Band III . The original plan devised in Wiesbaden for the framework of DAB in Europe was to allocate frequency blocks 11B to 12D for UK DAB broadcasting . However , as part of its Review of Radio , Ofcom has expanded the frequency allocations for DAB and has advertised local and a national ensemble licence on blocks outside the original Wiesbaden plan on 10B to <unk> and 11A . Block 5A has also been reserved for the launch of local ensembles . In 2015 , additional blocks were opened up for small scale DAB trials for nine months . 
