I've just been browsing the BBC and Parliament websites. As far as I can see, the questioning of Lord Oxburgh is going to be shown only on the Parliament website and not on the BBC. The link is here.
It looks as if Oxburgh has been tacked onto the end of a meeting about the UK's space capabilities. This starts at 9:30, so I'm guessing Oxburgh will not be on for at least an hour thereafter.