I have recently been sent a mapping document from a company called gcsepod.co.uk. They produce and sell podcasts for a range of GCSE History topics and have mapped all their GCSE History podcasts against our new Modern World and SHP specifications (see document attached).
They have a channel on Youtube which includes a video about how to use the podcasts and free excerpts:
http://www.youtube.com/user/GCSEPod
Anyone who registers on their website should automatically get a free title (World Ware One: The Home Front) and they have samples of each title on their website eg:
http://www.gcsepod.co.uk/subjects/history/germany-1918-to-1991/education-youth-culture-and-propaganda/