The links below will take you to the Geological Society website where many podcasts of lectures delivered as part of the London Lecture Series is a section of and associated with past meetings organised by the Geological Society (particularly those with a bearing on public policy issues and areas of popular interest) are available.
Past meeting resources are available here.
The link to the Shell London lectures (2008-13) is here.
Other London Lectures can be accessed here.
Podcasts which relate to the lectures can be accessed here.