Well walnut trees tend to grow to a massive size, not the sort I would associate with a hedgerow, hazelnuts, crab apples, cherry the same, although I wouldn't rule it out entirely. Bilberrys tend to grow on moorland and edible fungi I don't touch as I don't know which are edible. Don't they tend to grow in woodland though.

I tend not to forage by busy roads, too many headcases in rally cars for starters, but quiet byroads and lanes are rich pickings