BBC such as Radio Luxembourg, had broadcast programmes in English to Britain since the 1930s and the Isle of Man-based Manx Radio began in 1964. Today, despite the advent of commercial radio, BBC radio stations remain among the most listened to in the country, with Radio 2 having the largest audience share (up to 16.8% in 2011–12) and Radios 1 and 4 ranked second and third in terms of weekly reach. BBC programming is also available to other services and in other countries. Since 1943, the BBC has provided radio programming to the British Forces Broadcasting Service, which broadcasts in countries
Top 20 on 20 through the internet. And in June 2009, Sirius XM Hits 1 programming began simulcasting on XM 20 On 20 from 9 p.m. to 12 Noon Eastern. The station was announced on both signals as "Sirius XM Hits 1 On 20 on 20". By September 2009, the channel was removed from Mediabase's reporting panel, and aired music mostly sourced from Sirius XM Hits 1; however, the channel's programming was still different from Sirius XM Hits 1. Until February 9, 2010, Sirius XM Hits 1 and Top 20 on 20 was heard on DirecTV channel 816 until DirecTV has stopped carrying Sirius