Bob Gillibrand recorded a series of audio files, some of which are on the BCA website but Bob was keen for them all to be in the public domain so I've uploaded them to Youtube.

Bob speaking about the Berger expedition in 1963 and whether the ladders were pulled up....
https://youtu.be/PUQ9TSsD_24

Bob talking about his involvement in the Berger in 1967
https://www.youtube.com/watch?v=G1J14L9FHNk

Bob remembering the NSG hostel
https://www.youtube.com/watch?v=b6z3m6V5lvU

Bob talking about Alan Clegg
https://www.youtube.com/watch?v=BvVEEUTtgN4