I agree with you that the Richard Thompson venue was dangerously overcrowded, but more because of the lack of ambient light than anything else. I did manage to get from the bar to the further side with full drinks in less than a couple of minutes, but it was unpleasantly difficult, nevertheless.
The 50th anniversary of Topic records was also full to overflowing, but ,at least, it was daytime.
The Church was also full for the Melrose Quartet, but the steward did not allow any more in.
Generally, I thought the festival was well organised, but agree that too many tickets had been sold for the size of the site. As this is the last one at this location, perhaps next year will address these issues.