Thanks Sarah you certainly sound as if you know many of HOP's interesting hotspots, I've just done a bit of research and found out the below regarding HillyFields Farmers market:
* The farmers' market at Hilly Fields is held every 2nd Saturday of the month throughout the year.
*Hilly Fields has been running since April 2003 and there are about 15 to 20 stalls depending upon the time of year.
* Times: 10:00-16:00