Bluntinstrument regrets the absence of content in this critical area. Obviously a list would be helpful, but any more would be a huge task, which has already been undertaken (and revised) by Malcolm MacDonald.
As an alternative I am starting a series of detailed entries into Foulds' works, attempting to collate data on themes, performances, recordings and where to look for music and analyses. First entry completed:
QUARTETTO INTIMO [added 2007.09]