I think all pump diesel contains some bio element. The pump is marked B7, which I think is 7% bio.
Petrol contains 5% ethanol, which is marked E5. There are proposals to introduce E10, which may cause issues to older cars. I think anything post-2000 should be ok, but not sure of the details.
However, not good to add more, or try to run modern diesels on veg oil.
Perhaps one of our fuel experts will give us the correct detail.