Complex sentence: Until recently, the podcast was recorded in Zaltzman's living-room in Crystal Palace, and it began in January 2007 and has since become one of the UK's most successful independently produced podcasts.
Split into simpler sentences: Until recently, the podcast was recorded in Zaltzman's living-room in Crystal Palace. It began in January 2007 and has since become one of the UK's most successful independently produced podcasts.