Recently I was able to add 2 new dates in 1965 to the llst.

1965-00-00 Isleworth, Borough Road College
1965-00-00 Coggeshall (near Essex) played here often in a pub

The info from Facebook was put there by the person who booked Paul Simon and drove him to the tube after the gig:
“I put Paul Simon on in West London in 1965 . Great show. Ran him to Isleworth tube after the gig. Paid him £12.00.” The gig was at the Borough Road Collge in Isleworth.
Another Facebook-reader mentioned seeing paul Simon perform often in a pub in Coggeshall.