If we are taking prints for identification purposes, whether digitally or physically, we have a duty to check that people are who they say they are. As such we will require at least one (preferably two forms of identification). These must be originals and must be presented at your appointment.
You will need either: A current valid passport
or A current valid photocard driving licence AND the paper counterpart form D740
We recommend that you have both available for inspection if possible, as this will be more acceptable to the authorities to which you are applying