Arbor's list of ethnicities is provided by the DfE's Common Basic Data Set.
Because of this, we cannot add new values, or remove types from the list of ethnicities in Arbor.
We may not have all the options you use at your school. For example, Black British is not one of the options in CBDS.
If you don't see an exact match, you'll need to select the most applicable. If you're unsure which to select, please contact the DfE.