I have vague memories of time-trials and other events from there.
The 'Uts were built by the member London clubs of the 32nd Association, so called because of the nearby 32nd milestone from London, which marked the start of at least one time trial course along the then A11 (now B1383) towards Cambridge. The course was still in use recently, probably still is now.
The story goes that, since in those days most people worked on Saturday mornings, clubs would ride out to the 'Uts with their racing wheels on wheel carriers, stay overnight, race first thing on Sunday, and ride home. Various 'Uts have become private residences over the years, and one or two have, I believe, passed between clubs or belonged to clubs that merged with others. The Shaftesbury one is, I think, the best-used and -maintained?
It's a while since I rode Audaxes from there, as ACME seem to have taken over the mantle that was held by the 'Uts clubs fifteen years ago, of being lead organisers in the area.