The show started at 10 am UK time, but you can listen to any BBC shows online up to a week after they were first broadcast, but you need to have Realplayer installed on your PC.
To download Realplayer, link here:
http://www.bbc.co.uk/radio/audiohelp_install.shtml
To listen to the show, link here:
http://www.bbc.co.uk/radio/aod/6musi.../6m_gideon_tue