Roundstone pick your own farm , near Worthing.
we had the most amazing afternoon digging up carrots, pulling up onions, picking sweetcorn and plums from trees laden with fruit. we also picked bramleys from apple trees with branches so low that even 2yo dd2 had to bend down to get under them.
it was such a lovely simple pleasure, and all our pickings came to under a fiver.
they're open all september, i think. do go, if you're anywhere near it.
ps what do i do with my rhubarb to ensure that it's safe to eat?