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.
Rice cannot be grown commercially in the UK. Light and temperature conditions make it impossible to grown outside of a greenhouse.
potatoes
Not legally
Yes you can I think
Yes.
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.