I visited the Oxford Food Festival last weekend. It has only been running for a couple of years and this is the first time I had been. It was great, quite small scale, but plenty of delicious things to eat and drink. There was a good, laid-back atmosphere, with live music and warm sunshine, people were sitting around on the grass and haybales enjoying a few ciders and hog roast sandwiches.
From the food festival site at South Parks, Headington there is a great view of the dreaming spires and city centre at the bottom of the hill.