From 27 October 2009, Multiplex B (PSB3) was cleared of SD channels in post DSO areas, which were moved to Multiplex 1 (PSB1). In pre DSO areas, Multiplex B continued to carry BBC Four, BBC Parliament, CBeebies, BBC Radio Stations and 301 until DSO. Former streams of 302 and News Multiscreen on Multiplex B were sublet to broadcasters other than the BBC for pre DSO areas only, and were not available at all in post DSO areas because of the new DVB-T2 HD multiplex as replacement.