Wait a minute. That is a list of members of a governmental committee. I read that way too fast. Where is their expertise listed? I'm not seeing anything other than facts about the author.
You only get into the HoL if you have established emminence in some field - or if by inheritence, after you should already have established a career which was probably not geared to getting elected (such as lawyering)
Hence a wider range of expertise that in the House of Commons,