food
Yes they are grown in the UK
Broccoli can be grown anywhere in England.
Rosemary is easily grown in the UK. It can be planted and grown as a normal shrub.
Zinfandel is not grown commercially in the UK.
yes
Yes, there are hundreds of orchards growing apples in the UK.
potatoes
Not legally
Yes you can I think
Yes.
Rice cannot be grown commercially in the UK. Light and temperature conditions make it impossible to grown outside of a greenhouse.
Rhubarb is often grown in gardens and allotments across the UK. It is also grown commercially on some farms, although it is not a common crop.