It would be nice (for the world of Audax/rando) to expand the Wikipedia pages, and they are free for anyone (even those outside the AUK board!) to update quickly; so perhaps those with the passion and knowledge could kill two birds with one stone there?
The trouble with Wikipedia is that when someone with the passion and knowledge crafts a nice survey of what AUK and randonneuring is all about, someone else with equal passion and knowledge comes along and trashes the whole thing with their own take on it. DAHIKT.
Hmm where to start.
AUK badly needs an Archivist (I'm not volunteering). This is not the same thing as the Recorder, who is mainly concerned with maintaining the current results.
The number of people around who actually go back to riding audaxes in the '70s, and are still compos mentis and so could separate myth from fact, is getting very small. Fortunately a few of them did start quite young (by modern audax standards) and so do still have their marbles, and at least 3 of these are occasional contributors on yacf.
1000 Club - I haven't seen a list but I would imagine that, apart from recent additions (joined this year) it must be pretty complete. To achieve this you either have to be a more-than-averagely active randonneur for a very, very long time, like 3peaker - or you have to be a prodigiously-active rider over a shorter period, like the afore-mentioned regal yeast extract addict. (It was I who first gave her that title by the way - but not to her face and I understand she doesn't much like it.) Either category of rider must be pretty well-known and easy to spot as a 'suspect', I'd think.
Regarding old (pre-2000) ride records - a touching faith in paper has been shown upthread but all this stuff has long since been recycled. However not before it was scanned. All the old (handwritten, sometimes illegible) organisers' event results sheets exist as images - but not as yet online (total file size around 2Gb). The Recorder has a set of these scans and so do I, apart from a few documented gaps they are very complete, so that any member or non-member claim dated between September '87 and December 2007 can, with a bit of trouble, be verified from these. No detailed records exist before September '87 and people old enough to have been around at that time will probaably understand why. Also there are no known detailed Permanents records before the 2000 season.
Databasing old records - to prevent anyone putting time into stuff that has already been done - some old summary information is known and a small amount of this has already been databased. As 3peaker points out, anyone known to have completed PBP in a given year, can be credited with a minimum of 27 points straight off. So for example anyone known to have ridden PBPs in '83, '87, '91, '95, '99 (Jim Hopper, Sheila Simpson, Karl Hrouda) has at least 135 points from the pre-2000 period (obviously actually many more, but 135 can be verified by this means). We do already have a data table of all known (A)UK PBP finishers, with years.
Similarly we have as data all known SRs with years going right back to 1979 (the year SR was invented, as a PBP qualification tool) - Jim with his 36 SR years so far can be credited with 540 points without even looking any deeper. The data does not include multiple SRs within a season however, nor can this information easily be retrieved now, for the period before 2000.
Other stuff we don't have and could usefully add (from paper archives, eg old Arrivees etc):
100-point and 50-point lists, these exist in paper form (Arrivees, Handbooks) back to the early '90s.
Championship totals - from these totals alone, none of them currently held in data form, Liz Creese is shown as being 'in the club' as early as 1996.
Unfortunately a lot of 'near-miss' championship runners-up are not documented at all.
Maybe a few known and documented BMB, PAP, Le-Jog rides could be taken into account.